Well that sure clears that up, and where does one find these clear "bras"? Do the after market part house's carry them or do you have to go thru a dealer?Thanks for the quick reply.
I also had a Black Wing CAI installed. It's all good- Just ask the Fire Bird I embarrassed in Schaumburg, IL. 
ScottBORLA is making the exhaust for GM currently.
The NPP system is still muffled. There is a way to make it "straight pipe" loud, if you want. You have to open up the cans, weld up all the perforation holes, then weld it back up. You will have "mild to obnoxious." I left mine stock (Z06.)My advice would be to leave the performance exhaust on. My '08 came with the NPP and, IMO, is not worth the money. I found it to be way too mild. I pulled the fuse so the flap is open all the time. Still not all that great sounding and it drones pretty good at certain speeds. If I knew then what I know now, I would not have gotten the NPP. Then again, I like nice growl.
Drone can drive anyone nuts! I have a Z06 and pulled the fuse...once! There are exhaust companies that cater to the Corvette world that have done some homework regarding "harmonics." Unfortunately, the pitch needed is a bit higher than the "lowest,deepest pitch possible." Best thing to do is contact your local Corvette Club and get their input or a ride to witness the exhaust yourself. HERTZ rents 2008 Corvettes with NPP also.
Thanks guys, this is the quickest and most accurate forum in the world as far as I am concerned. They have installers all over. When I get out of this wheelchair and pumping iron again I have a site about 30 mile from home I am going to check out.
I will have my clear bra put on in two weeks and I will post a review here.
Well, on the tag on the inside of the Glove box door in the list of RPO codes there would be a "NPP"!
Dealers:
