ok, so i've already got the PR CAI so i've pretty much decided that my next mod is going to be on the exhaust, i wanna go for a WSP y-pipe and the GReddy cat-back from custommaxima, unless anyone knows where i can get it for cheaper... i already have the RT hi-flow cat, but havent installed it yet, cuz of busy-ness... i jus wanna know if you guys think this sounds like a good set-up for pretty good hp gains and a nice deep tone/drone????