Are you going to run the shortblock as you got it? (pistons) I'd look into TW's or VR Jr's. I believe AFR's have the thinnest deck. Look down the road.....if your going to run a 331 later, get something now thats not going to hold you back. Check into the piston CR's and be sure you get a head that you will be able to stay at the CR you want with the
331. Look on other boards for info also, not many boosted guys here