Mustang seats are crap. I ordered one put it on, it was 1/4 " misaligned to the right. I sent photos, measurements, and a detailed discription on how to fix the problem. I sent the seats to the factory, they did the work and returned them. Guess what ? the seats still misaligned by 1/4 ".
THe people that run mustang seats are idiots, and their product is crap.
Have one from a previous owner with a sissy bar backrest. Overall the seat feels good but have nothing to compare it to (being my first bike). Must mention that the passenger backrest inner threaded ferrule(?) worked its way through the fiberglass backing. Tried to rig something up to fix from Ace Hardware but, still is not right. IMHO there should of been three attach points to beef-up the backrest to the sissy bar instead of two.