i know the heading sounds crazy. Here we go. Doing a father son car. He's going to be a senior in college. His main focus is to finish college strong and try to find a job. My son bought a 72 cuda. Original 340 3 speed. Original motor long gone. So we are starting on the body first but trying to figure out a good motor to build with in a budget ,but a good strong dependable driver. Car came with a 340 cast crank motor that needs a rebuild. we could do a re-build but everyone says buy aluminum heads cause its to expensive to rebuild cast iron heads. Not cheap ! Another friend says use magnum heads on it. Another buddy says run a 5.7 hemi. now you have money in change over and mods. So I know its up to us but right now the body is getting done first. So as we look into motors what's your opinion for an good engine build for this car? throw us some info , costs any other info to help us make a good decision. thx