I'm thinking about cutting the top off my 81 pick-up . I've got the windshield frame cutting and grafting part down and the doors are no big thing . But the back of the cab I'm not to sure about . I'm going to cut it flush with the bed and theres going to be a gap in the cab , should I weld in sheet metal or use fiberglass? When I did a search on this I saw alot of problems with flex on C-5s , is this going to be a problem on a pick-up? Do you know anyone who has done this kind of mod? I 'm planning on running a 10 point cage , should I tie it to frame with no roof?At least the welding should be alot easier with on roof!!!