Beyond the stress tests, Cramer said there are other things to like about this stock.
"SunTrust has major exposure to housing, especially in the Southeastern part of the country," Cramer said. "And in the markets where SunTrust has the most share, housing prices have been rebounding dramatically."
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Also, he said , "SunTrust has been growing its deposit base, especially lower cost deposits, while trimming its exposure to high-cost deposits. And management, has rolled out a new, aggressive cost-cutting program."
All told, "after we get the stress test results on Thursday of next week, I think investors are going to jump all over SunTrust," Cramer said.
Considering all the catalysts "I think SunTrust presents the best buying opportunity in one of my favorite sectors for 2013. "