Well its that or the next size up, which is 120 bucks compared to 75...
http://www.jegs.com/i/Dynomax/289/17233/10002/-1
Not sure why the huge price jump.
Their camaro muffler is a 24inch over all, and 20 inch body, so I guess some where around there size wise?
Maybe I will call em tmmr and ask for their opinion.