Hedman/summit/jegs
I did on my Duster . It's in this;
http://www.forabodiesonly.com/mopar/showthread.php?t=10508&page=4
Scroll down some. Not exactly detailed.
IMO, this kit is well worth the bucks. Fit together well and needed only a slight trimming at the tail pipe. You can get there kits with and without mufflers.
If you want to do a "H" pipe, this can be purchased seprately.
If you want an "X" pipe, again, it can be purchased seprately, but I think, it would be better not to purchase there kit if doing so. Just purchase the "X" pipe kit, add mufflers of choice and seek tail pipes.
Exhaust can be done cheaply!