"Are you ready to tear this tax code up by its roots?" Ways and Means Committee Chairman Kevin Brady asked the audience as he took the stage at the Conservative Political Action Conference in Washington, D.C. on Friday.

The GOP has lit a match on tax reform, but nobody seems to know the length or texture of the fuse.

Expectations are high for Republicans to deliver an overhaul of the U.S. tax code now that the party is in control of the White House and Congress. Markets have rallied in anticipation of reform, with the Dow Jones Industrial Averageextending its record-breaking streak on Friday and marking its third-straight week of gains.

"We are pushing full steam ahead with bold solutions, once-in-a-generation solutions to get America moving again," said Brady, a Republican from Texas.

But uncertainty on the details permeates.

"I hope we'll see it right away," said former Virginia Governor Jim Gilmore, who ran for the Republican nomination for president in 2008 and 2016, in an interview. "The most important thing is to have a tax reform that will create growth, and I believe now, for the first time, we have an opportunity to do that. And I think we should do it as soon as possible."

Treasury Secretary Steve Mnuchin told CNBC this week he expects to see "very significant" tax reform by August. His timeline is a bit more generous than the one put forth by his boss. In early February, Trump said his administration would be presenting a "phenomenal" tax package in the next two to three weeks. As in, by March.

"It's going to be hard in the American system to just do a big major tax reform by March," Gilmore said. "But if I could do it by February, we'd do it."

The GOP still has plenty to pan out on tax reform before putting forth a package. Brady on Friday touted the border adjustment tax, a contentious measure in the House plan that taxes imports and exempts exports.

The tax has become the subject of fierce debate on Capitol Hill and in corporate America. Retailers oppose the measure, while exporters support it. Boeing (BA) - Get Report , Pfizer (PFE) - Get Report and Oracle (ORCL) - Get Report are among a group of corporations that have joined a group they've coined the "Made in America Coalition" to support the border adjustment tax.

Brady, a proponent of the measure, has adopted the term into his lexicon.

"We are going to end the tax on 'made in America,'" he said on Friday.

In a subsequent Q&A session with Brady, Breitbart News' Alex Marlow pointed out that 97% of importers are small businesses. Brady said he's not concerned about small businesses being hurt and pivoted.

"The principle here is: should all businesses play by the same rules?" he said.

Brady faces much less pushback on another tax promise -- one to simplify the tax code so much you can file on a postcard.

"Under our blueprint, the tax code will be so fair and so simple, nine out of 10 Americans will be able to file them on a postcard-style system," he said.

"All of us would be thrilled if that was the way we had to file our taxes," Marlow said.

Despite the tax cut cheerleading from Republican leadership, some remain skeptical.

Michi Iljazi, communications and policy manager at Taxpayers Protection Alliance, a nonprofit organization dedicated to tax reform research, said there is an impetus towards reform, but lawmakers must proceed with caution.

"We want a simpler code, we want lower rates, we want consolidated brackets, we want businesses to be encouraged to stay here, hire here, build here, make here, but we also don't want to pass tax reform just to say we passed it," he said.

While he hopes a package will come this year, there's no need to rush the process. "If we do something too fast just for the sake of doing something, it may not be the best thing for everyone," he said.

Patrick Humphries, a 56-year-old healthcare IT specialist from Bedford, Massachusetts and Tea Party activist who has attended CPAC for the last five years, said he has taken a "wait-and-see attitude" toward government progress, on tax reform and otherwise.

He said he believes the GOP should tackle repealing and replacing the Affordable Care Act first and foremost -- which most agree they do will.

"Tax reform will come on its own," he said. "Obamacare has to happen, it's one-sixth of the economy. Tax reform is the economy, but there's already a pro-business sense out there, so that will help to a certain extent, getting rid of regulations."

To be sure, taxes are not top-of-mine for all conservatives. That's certain the case at CPAC, where the conversation among attendees centers much more on items like immigration and gun rights.

Grace Hennessey, an 18-year-old high school senior from Oxford, Pennsylvania donning a "Make America Great Again" hat, is making her first visit to CPAC this week. She stood in line with other young attendees hoping for a photo op with Ken Bone, the man who became an internet sensation after asking a question at a presidential town hall.

Trump's stance on immigration has driven her support. "It's less about the wall and more about the actual reform that needs to be put in place," she said.

Hennessey, who starts college in the fall, has not yet filed a tax return and isn't too worried about reform.

"I know it's a big issue, but I personally am not impacted by it," she said.