The Full Experience

First thing I'd decide how much power you want in what powerband and how much gear your willing to go, also is this a street only or is gonna see some strip time or a lot of strip time. Smaller engines can make the same HP as larger ones just more rpm and gear to be as quick, a 318 probably make the same power as a 360 about 500rpms higher but be a little less streetable for ever HP level you up eg a 350hp 318 will have the same streetablity as a 400hp 360.