I've been reading around the"upsolute". K&N Filters is always a must for me since my last car (IS 300 LX). There is a dealer down here in Homestead, FL Not too far from where I live. Will give them call tomorrow & sees what he says. I'm sure there are 20 million things that can be done to this car to make it faster. One can stick an F-18 Hornet engine out from the back & probably shred an enzo to sh%t. But $400 + filters sounds about a good price range. I miss that sinking feeling into my chair that I would get from my IS 300. That is all I want & I don't mind being set back $400. but Wes, IF you get a chance pls post HP & Torque, very interested in seeing those #'s. Even though I am calling Upsolute, my mech friends can't believe the price for this!