[gmehall]

Heres the deal,

1. Stock replacement Pipercross filter, Just open the air filter box and drop it in. Easy

2. The Pipercross air intake system, Removal of the factory air box necessary, not hard just unbolt it. Nothing permanent.

3. The Pipercross Carbon Fiber Viper air intake kit involves removing part of the stock air feed pipe to route the new cold air feed line. This removed part can't be reinstalled because you have to break it off.

Hope this helps, also the sound alone is AWESOME!