When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Yes this subject has been discussed before, and is very confusing thanks to the MPC. The 45* fender is really the "F 350" fender, used on all F 350's '61-'66 regardless of wheel size. Other applications of this large fender are model and year specific. 1961 to 1964 F 250 4x4's got the 36* fender when equipped with 16" wheels. 17" 17.5" and 19.5" wheels got the 45* fenders. Ford changed the rules in 1965. All '65 F100 4x4 and F 250 4x4's got the large 45* fender on all wheel sizes. In 1966, the F 250 4x4 continued with these rules, but the '66 F 100 4x4 used only the 36* fender on all wheel sizes ( 15" 16" and 17.5") Don't look to closely at the MPC, its not all fact, written by hourly employees that make mistakes.