a 565/582 short deck would work good .and the headers would fit better tall deck would need custom headers so why stop at 572 /589 had one in my gto.s great engine but you could build a 632 pump gas engine that would be a killer . a small block would work to move it but the big chevy is a new world .how deep are your pockets? you go all alum and it is light like small bock chevy light