Comp Cams 106100 106400. The '100s won't need stiffer springs, the stock ones will work but as for the '400s, those will need stiffer springs. If you're going to do this make sure and degree the cams so you can get the full hp/tq increase of the cam swap. Set to 108* intake, 114* exhaust.
Also, you won't see the full benefit of cams if you don't have headers, preferably longtubes and o/r X or H pipe.