Hi,My question is concerning the Borla #140206 cat back dual exhaust system for a Chevy SS Trailblazer.My application would be for a 2007 GMC Envoy Denali 5.3 V8...they do not list a system for my application but,since the Chevy SS and my Denali are basically the same vehicle I see no reason why it wouldn't work for me...am I missing something? has any one found a system that fits a 5.3 ? and if so how do you like it?....thanks Mike.