Are you guys saying the frame would still be weak with a bought M-2 crossmember? Would the camaro sub-frame be stronger and make it easier to fit in the Cadillac 500 engine. I've got access to a mid 70's camaro but am a bit nervous about using it because I've never done this before. But after thinking about what all will have to be done to fit the Cadillac 500 engine in such as recessing the firewall and relocating the front body mounts, etc it may still be about equal work to use the Camaro sub. Also it may still save me a few bucks. I sound like I'm trying to be cheap but really just trying to replace time with money where I can if it doesn't compromise the quality of the finished product. Is there a sight that gives some details and pics of grafting the camaro sub or does anyone have any pics? Thanks again for replies - I need all the help I can get.