Im getting an engine off my friend whose getting a 347. Hes selling me his 302 short block with 3000 miles on it. It has 8:5:1 compression pistons. hes also selling me his Edelbrock Performer Heads, Along with a B303 cam and 1.7 roller rockers. With that engine and my mods listed below are high 12's possible? Also i know im gonna have to convert to mass air, what size mass air do i need and what lb of fuel injectors? I plan on adding a supercharger in the near future, " well like in a year" and i only want to get 1 set of fuel injectors and mass air meter. Like when i get a supercharger i dont want to have to get new injectors and a bigger mass air. Thanks guys for any advice in advance.