should i go 2 1/2 in. or 3 in. exhaust? And why?? what muffler would you suggest? flowmaster, dynomax or something else. where do i find a turbo dump to match. i found some on ebay for a 91 supra with a ct26 turbo. it looks like it would fit the ct20 also.but im not sure. also what is everyone doing to improve air intake.