Thanks man, I appreciate it. I definitely am going for a vintage look with it, and the air cleaner really helped out.
Those are Vance & Hines fishtail II slipons for the 08-up touring bikes. I still have the factory head pipe with the catalyst.
With the regular baffles in the pipes and the stock air cleaner, it had a wonderful sound to it and wasn't too loud. It got noticeably louder with the air cleaner addition, so I just put a quiet baffle in the right side pipe to get it back to the original pre-air cleaner volume. Not sure if I'll keep it like that yet, only rode it around briefly yesterday. Hope to get more ride time in this weekend.
The supertrapp versions look more original, they definitely match what was on the early Duo Glides.