I've thought about having a straight pipe welded up in this fassion myself, but only because I'll be driving this car in Solo II D Stock events and the only real performance mod you can do to a car in that class is a Cat Back (well, if you consider a K&N air filter a performance mod I guess that too). I figured I would get the best HP increase with a straight pipe with an added benefit of loosing weight from no muffler or resonator as well. I don't think I'll be driving it like that on the street however.