I have all that. the body is a 1931 Buick and it's on an old truck frame. The engine weighs 1400 lbs and the tranny is just under 300 lbs.
I was thinking of using an I-beam out of a 4700 series truck, but I am wondering if there is something from an old truck (30-40's) that might be an I-beam that is bigger and stronger than what I currently have which appears to be the stock I-beam. I was thinking of using a custom leaf spring in the front. Any thoughts?