First off, this is why I ALWAYS go to vintage car swaps whenever I can, you never know what you'll find! Scored a Crazy Franks fender, and brought it home, set it on my '59 Ironhead, and it seems to fit. It measures about 7 1/4 on the outside of the mounting tabs, and looks like it has marks from a sporty casting in the paint (looks different from a big twin casting). I don't have a big twin, but I brought it over to my friends to set it on his BT, and it seems like it's actually a bit too wide to fit between the BT shock mount castings. Is it possible it was made for a Sportster? I've only seen them for a BT. Can someone measure theirs on the outside of the mounting tabs?