If I am not mistaken the 1 1/2 ton truck has the big front end ( larger fenders and grill than the 1 ton and smaller trucks. Like Grigg stated do some measureing the fender may cover the wheels better than you think. I have put a 51 ton on a 78 c-30 frame and the wheels do stick out noticably from the standard wheel location but I can live with that due to the added benifits of the more modern running gear and it did eliminate some of the issues with the big block. You can follow the links below to see photos of the my build which is a 454 in an AD truck but on a modern frame. Research is the best way to determine your plan and I have found that this is the best site for that.
