ATI AF056I-009 3.5 inlet x 6.0 dia base diameter x 9.00 long

3.5 inlet x 6.0 dia base diameter x 9.00 long

We have found this filter to pick up 1 to 2 more psi of boost over the smaller ProCharger supplied air filter. 
When an air filter is too small and becomes a restriction, it can cause belt slippage.