383 with Eddy heads!

Neither of those cams will probably bleed of a tons of comp. but with the alum. heads and you may be able to play with gasket thickness a little bit to get you where you need to be. Still not exactly sure about the weight factor in all this. Guessing your gonna be about 4500 lbs. wet. Hope someone else will chime in who has more firsthand experience with this, I'm curious too?
I'll give ya a bump every now & then and we'll see who can chime in.