I was going to install a stretched body on my frame to get some leg room. I decided against it after seriously considering all of the mods required for my particular car as the lift bars are located from the cross member, I would have had to redesign the entire rear suspension. Anyways, Ron, from rpm was helpful to me with information on the frame mods required for a body that he sells. You may reach out to him. No offense to any other builders, I just happened to talk to Ron.