You could just use a flat plate with a hole in each end, bolt one end to the captive nut inside the rocker panel where the current seat belt is attached and bolt the retractor to the other end. I was afraid in an accident the seatbelt retractor could possibly rotate so I put a small S bend in the plate, cut my carpet and a cut a slit in the inner rocker with an air die grinder cut off tool. I was able to feed the metal plate through the carpet and into the slit in the inner rocker panel and then bolt it down where the original seatbelt attached. The total length of the plant play are used is maybe 8 inches long
