Sorry, not sure where i should post this but anyways was on HKS's site and was looking into buying HKS'S turbo cat system so has anyone bought/have HKS's turbo cat installed on their car/s? How does it look, sound, and compare to lets say greddy's evo2 and apexi's gt cats? Finally is HKS's turbo cat worth it for the money?

Also on the site discription says 'specifically engineered for turbo systems'; are the evo2 n gt/n1's engineered for turbo apps. also?