Got the car straight piped from the exit of the stock header collector to the muffler. Makes a nice little gurgling sound under acceleration. Kinda reminds me of my friend's stock Z34 Lumina back in the day now. No noticeable difference in performance. I raced it against my son's BPU Stealth TT today from a 40 roll. By the time I got to 100 MPH he was easily 200 yards ahead of me. It didn't even look like I was racing against him. Oh well, I ordered one of those intake kits with a free flowing filter on it yesterday as well and also new spark plugs, plug wires and going to put on the SOS coils that I already have. I doubt it those things will make a noticeable difference either but they can't hurt. Maybe if I do everything and get a hundred pound driver in the car, it'll break the 11 second 1/8th mile barrier but I doubt it. I really want to try the long tube headers as well but they might be cost prohibitive on this car. At least it's now a little different than every other Stealth supposedly just like it. To me, that's important also. New aftermarket rims coming soon.