I just accquired a 1978 Buick Regal with factory floor shifter,bucket seat,turbo hood ect,ect.. My only problem is the the frame is shot. I have a 1979 El Camino that was in a wreck but the frame is still PERFECT. Are they interchangable or is the EL Camino Wheelbase diffrent from the 1978 Regal? Any help is appreciated!!!!!!!!!: