I have heard that the front fenders on the 90 or 91 Mustangs had wheel openings that were 1" longer than the earlier cars. Supposedly, when the 16" "Pony" rims came out, that was when the change was made. Can anybody confirm this? Also, if this is true, would all the cars built after the change have these larger fenders,including the 4 cyl`s, or just the 5.0 cars? Thanks