So here it is, the long awaited aluminum exhaust ready to be introduced to the car. At 3.5 ID, it will flow good to the special mufflers. Chris over at Unobtanium made them from scratch using my drawings of a Dyno-max Ultra-flo straight-thru Muffler.
The system will have to be mounted using special rubber mounts at various points to keep it from cracking. It will weigh 22 Lbs complete with the 45 degree down turn tails added in to exit before the rear end.