very nice ! how much did they cost vs the non catted pipes ? I want to get some and I think I'll save the extra $ and get non catted and keep my stockers if I ever need to swap them back in. It's my understanding you cant really tell a difference in sound, or power catted to non catted with the stock exhaust still in (which I will leave in). I asume yours still sounds stock ? exhaust / turbo whistle ??