fabricating the exhaust system was a major. a HUGE job. the TTI's are great, but given the tight clearances it's hard to expect they will fit out of the box. then getting 3 inch pipes down the car, with enough ground clearance considering the car is lowered 2 inches (a "true" 2in), was a challenge. all before trying to get 3inch pipes over the diff, which the next pic;s show how we did it. HUGE job, but it turned out great...