I have the same issue. The filter just barely touched the bar so it's not really a problem. I have a 1" front bar. Yes the original bar had a sharper bend but also was only 7/8". I know a smaller filter is taboo to some people but curious if the FL-400s would work.
Saw that issue more than once at Global and JBA. There really wasn't a "quick & dirty" fix for that deal.
Somebody hand drew a smiley-face next to that part number in the Addco book in our catalog rack.......
From your picture I can’t tell how high up on the can the interference is. If it’s in the lower 1/3 of the filter can, you might try a Motorcraft FL300 filter. It’s about a 1/3 shorter, with the same mount dimensions as the FL1.
Ford used them on 5.0 Police service Mustangs, as the added oil cooler sandwich extended the filter into the rack.