Is it a bad idea (or just a stupid idea) to put the older style Harley SE slip-ons (#64926-99) on a 2009 Ultra Classic? Anybody know it they will even fit? I had these on my 2001 FLHT and loved the sound, but that was a TC88, carb., Stage 1. Can I put these mufflers on a '09 96ci, fuel injected, totally stock Ultra without causing any harm or without having to get a tuner or Stage 1 upgrade?