2-in-2-out muffler schematic
 

Have seen lots of 1-in-2-out plans and discussions (http://forums.pelicanparts.com/search.php?s=&action=showresults&searchid=1781324&sortby=lastpost&sortorder=descending)

Anyone interested in posting pics/schematics/soundfiles/anecdotes on 2-in-2-out muffler mods based on 3.0 SC mufflers? I hear this is a common setup here that passes local track regs but haven't met anyone yet who actually knows how to do it.

Streetability isn't interesting but torque and HP is!

thanks all

Bump for the weekend crowd...anyone help with a diagram or pics ?

Check out this thread. I found it for you using Jack Olsen as the poster and "muffler" as the search term. There are a LOT of results.
If you change the term a little and eliminate the author, I'm sure you can read all night.