2 guys did something similar on the Sunbeam forum. 1 took an Alpine and widened it by 8-10 inches, I can't remember but it came out beautifully. The other took an Alpine body and was going to put it on a Miata platform. He actually got them set in place and tacked together, but that was as far as I think it went. Someone said in the very beginning when he was going to start it that all he was going to do was ruin an Alpine and a Miata, and that's exactly what happened.