okay I never thaught I would ever be faced with a problem like this! I have had every intention to put a 303 or the like in my 40 olds however, I was talking to a buddy about helping me to find a good runner and boy did he spin me for a loop! he said why dont you just buy my 331 Hemi? I said what Hemi? he said I have one out back that I havent started in a couple years. I know most everybody is gona say something like anything is cooler with a hemi, however like I said I was realy wanting to keep it with a olds mill. He also had a cadillac 331 that made me think. what kind of problem is that you may ask? I dont know at this point? I have never built a hemi before and I would like the build to a budget. give me your feedback I'll post a few picts. so you can get the idea.