Generally speaking, 65 -68 are the same dimensions and will interchange. There are small differences but they can be worked out. The Wagons and convertibles are heavier and have an X brace an I believe 2 extra mounts under the cowl area. I cannot remember if sedan and hardtop are the same, I THINK so. They are all bad to rust from the inside out. The classifieds in www.fordfe.com would be a good place to ask for one.