If you want to upgrade your engine performance and the "sound" of the exhaust, it can be done by getting a new header and exhaust system from Stainless Exhaust from England. I just got the system installed into my DeLorean two weeks ago.... It added more "pep," but don't expect hi-performance miracles. The exhaust sound is louder, like a "souped" up Japanese car. It is great for the younger owners. The only draw back is, now I can't hear the my sound system without cracking it up, for there is a "little" droning noise in the cabin at differnt RPMs. All in all, I can live with it. It has changed my driving habits, for it feels like a different car with pep.... Not sluggish anymore. Total system cost? With "cats" over $1,800 US dollars, without $1,400. US dollars. It is very well engineered and beautifully fabricated. Muffler is LIFE TIME GUARANTEE! Excellent bending and welding job. No kinks in the pipes and no chicken "turd" welding at the joints http://www.delorean.co.uk/exhaustmod.html <A HREF="http://www.delorean.co.uk/exhaustmod.html">Free-Flow Exhaust Modification</A> It is so beautiful :-) Rob at PJ Grady likes it too. Too bad it can't be exposed as a "art".... Kayo Ong #5508 Lic. 9D NY [Non-text portions of this message have been removed]