I found this article on installation but I was wondering what are the best fitting headers (coated) and X-pipe out.
http://www.fnsweet.com/garage/lt_install/index.shtml
http://static.summitracing.com/global/images/instructions/bbk-1532_15320_1533_15330_1541_15410.pdf
These are going on a Procharged 03 GT, Automatic.....MAC cat-back
http://www.fnsweet.com/garage/lt_install/index.shtml
http://static.summitracing.com/global/images/instructions/bbk-1532_15320_1533_15330_1541_15410.pdf
These are going on a Procharged 03 GT, Automatic.....MAC cat-back
when i used too build f-bodys the 1 3/4 was the way too go.