The fabrication of the turbo system was a large challenge in packaging. With OEM power steering, A/C and cutting of the car kept at a minimum. Only 2 large holes were cut in the car. That was where the tubes leave the inter coolers and run through the inner edge of the fenders and through the core support. The air leaves the turbos and exits down toward the ground and through the inlets to the intercoolers. All of that was not so bad. The exhaust and waste gate plumbing was the real issue.