i was going to put that Big Block in it but i dont have the extra money to build it right now..So thats why i reather stick with a small block cause it dont take near as much money to build them..but i found a set of heads for 1,800 and i thought that was high for a cast head..i got to looking for more heads and they are high as heak..So i reather stick to my small block..not unless i find a good set of desant heads for the big block then i would keep it and just build it instead..thats whats holding me up right now is getting me a set of heads for it..