Tonight I'll be ordering either an X-pipe or an H-pipe. I'm looking at the offroad ones that Flowtech makes. I think I'm the only person with a 347 stroker and stock(that's right, all 4 cats) exhaust. Will the X-pipe make more power to justify it being $70 more? People say X-pipes sound more exotic, foreign car-like while H-pipes sound like a classic muscle car, is this about right? Opinions are fine but it would be great if someone would actually say "my car made 7 more horses at this RPM with an H-pipe over an X-pipe" or something factual like that. Thanks!