I don't believe the GMPP intake ever made it to the market. There are no factory gm or GMPP header options, you will have to go aftermarket if you want them, but there are several brands to choose from. There is a GMPP axle back, but for the amount of $$ they want for it you can have your choice of several aftermarket units...
Yes i do have the axel back and hurst shifter ect, I saw in the catalog that they put the "ZL1 air filter"...i hope this isnt the "new" replacement for the CAI GMPP was supposed to come out with
The LSA air filter flows about 3% better than the factory SS filter in the stock airbox/stock intake tube alone on my flow bench... Not really worth buying new... If you want one, I have the one I did the testing with never been run in a car, I'll make you a swinging deal on it.
I'm fairly certain that the GMPP intake will never see the light of day.