Hi xrlook, My mods are fairly simple, but work well. Back in 2009, when it first ran in the 11's, it had the following; Process West front mount intercooler Xspeed stainless steel pipe work Process West/Xspeed inlet plenum Xspeed top mount air box, this sits on top of the engine in place of the factory intercooler HKS SQV blow off valve 3" metal cat with Cebu GED exhaust Injectors and Xspeed 15.5 psi tune