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.

I ran the HER2228 in my 408 4 speed except it had a 111 cl. I had about 10-11" vacuum at idle and a nice lope but not radical. The car had pretty good manners and made good power (no dyno or 1/4 mile times) but I had Eddy heads and intake and 10.5 compression. I would ask Hughes for a recommendation as it might be a bit much for a stock engine.