There's another 10% of upside in shares of

General Motors

(GM) - Get Report

, which has a "big quarter ahead," Jim Cramer said on

CNBC's

"Stop Trading!" segment Thursday.

"I'm willing to risk my neck -- I think the stock's headed to $30," Cramer said. GM recently traded for $27.18, up 98 cents on the day. It was benefiting from positive comments about the second quarter from one of its top purchasing executives.

"Someone finally gets through the clutter," Cramer said. "GM is a cost-cutting story. They're making a lot of money if you just get rid of health care.

"I think they can make a deal."

In another sector, metals, Cramer decried the lack of positive impact from

Inco's

(N)

raised guidance. Since nickel is mainly used in blends with other metals such as copper and steel, "this should have been a signal, but nobody wants to listen."

Cramer said

Rite Aid

(RAD) - Get Report

looks like a good bet after executives said on a conference call that they expect a strong second half. "They're giving the stock away," Cramer said. "I really think this is a great speculation."

At the time of publication, Cramer had no positions in the stocks mentioned.

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