[razerwire]

looks like glass car and alum car is different behind seats. Round frame members are exposed in alum car. Just put 6 point harness in car. Two points for shoulder to frame behind seat, lap belt to floor, crotch strap goes to same point as lap belts. When you get in car you sit on two crotch straps( looks like v) then put one shoulder strap, then crotch strap, next last shoulder strap, last hook seat belt to the first seat belt you hooked rest of belts to and pull tight. Simpson has pictures on web site.