I 'm trying to plan the frame for my 48 coe ,the last truck I did was a 49 F-3 and I sup a 78 chev and it work great. but this one has the brace for the cab ,and the frame rail have to be straight,so I was thinking about the mustang 2 front end. that would let me use the frame i have ,but the frame is of a F-6 and its to high in the rails and way to heavy. so I think I need to find a F-1,2,or 3 frame to start with.can some point me in the right dir. thanks