I really like the look of your bike. did you just get standard front tubes from a nightster? Was going to go with a 2 into 1 thunderheader but the noise is a concern. How is the v and H

 

I got the standard height front springs kit, make sure you don't get the lowering kit unless that's really what you want. Also, HD refers to heavy duty in their rear shock guide, just an FYI. I'd just go to the Progressive website and confirm your part #'s with your dealer (might be cheaper to go through them, plus you don't have to pay s/h if you use them, and the dealer will also likely then assist you if there is a warranty issue).
Pipes are great, have a deep rumble thunder kind of sound, and yes, they are loud but not obnoxious. I don't think they're nearly as loud as my V&H Shorties on my first 883, but they do have a rumble and I did get a boost in hp/torque by 9/10. Might want to check into RB Racing LSR 2-1 Black Holes if noise might be an issue, or D&D Bobcat (loud and perform well also.)