By pushing the front feet far enough forward to be able to mount the frontmost bolt right up next to the weatherstrip and maximize the usable rail length, I had to trim them a fair bit to clear the cab. (That portion of the foot is hollow, so just cutting the front off would be ugly.) If you cheated it back half an inch in the topper's lip, it's possible that no such trimming would be necessary, given the topper-cab gap.

Owner caption September 2018 · Photo 184 of 705