What Cam should I get?

If staying roller then
hughes HER2228 .520-.544 lift 222*-228* @.050 114cl1800-6100rpm
or HER2836=.544-.568lift 228*-236*@.050 114cl 2000-6300rpm but with stock comp you'll be pushing it.

HER1828 .544-lift 218*-228* 114cl 1800-6100rpm -might be more like it with your bottom end.

If he runs either one of these cams he'll need a LOT more stall...$$$$ converter...