ford has the borla exhaust that is street legal and not street legal, its just not listed... if you ask for it, but they do not have tubes or headers that areI assume this is part # M-9430-GTX. That sounds the best to my ears and the most like the original race car (FYI the Duke Publishing video has a test of Ford's museum GT40 and it sounds like this, just fabulous).
That exhaust system is listed at Ford as "not for street use". What I'd like to know is does it eliminate the cats altogether? If so does that mean you need to recalibrate the ECU or make any other adjustments? Also, can the owner of this car or one like it provide decibel levels at various RPM comparing it to stock? Because that exhaust sounds fantastic to me but if it's so loud that it's undriveable in the real world I guess I'll have to go another route. I love my stock car but the fact is, its too damn quiet sometimes. As the hog riders say, "Loud pipes save lives". :wink