Made this turbo back exhaust for this Rb powered 240z, it's made from oval tubing and round tubing. Fully tig welded stainless steel. A HKS Hi-power muffler was used at the back. Rear spare tire well was cut in order to clear the enormous muffler ( customer didn't realize how big the canister was) Cut some sheetmetal and Beadrolled it for strength and style. Came out pretty clean and it sounds awesome! I will try and upload a video here or link to youtube.