Reply to "Seats"

Stock rollers are rubber coated steel. The rubber flat-spots and then slides rather than rolls. All the vendors sell nylon substitutes that work 100% better & are cheap. In addition, the floor pan can get bent, which twists the seat rails. Remove the seats, then the rails & dump out the stock rollers. Then lay the rails on the floor & see if they appear straight. If not, a large hammer will straighten this easily. One-piece stock seats in '73-74 Panteras often crack their frames; 71- mid'72 seats had removeable backs and seem much less prone to frame-cracking, and are more comfortable to start with IMHO.