Rocker for 1965 Coupe was too wide and I will have to cut it down or find a better one. Very disappointed. The panel measured 6 3/4 inches when needed to be 5 3/4 tall. Not only that, but the bend between the flange against the inner rocker and the sill plate where you pilar rest is too wide by 3/8 of an inch. Very poor fit.
If you are restoring a 65 - 70 Mustang, this replacement panel welds to the inner rocker panel to replace rusty or dented rocker panels. It fits both fastback/coupes and convertibles (fastback/coupes have a different inner panel to a convertible). Sometimes called the sill (or door sill), it fits underneath the door from the front fender to the rear outer wheel house. This part is made from a quality metal and is an excellent copy of the original. It fits on to the existing parts without having to trim or bend anything.