simple question

:bling: install a V8:driver:
 
For true duels you will have to get an after market split exhaust manifold. Or you will have to have a shop to make a y pipe, one that will work right for it to sound decent. Room for 2 Cats, and 2 Mufflers is a little more difficult on a YJ, but possible
 
In a word, don't. There is nothing to be gained. It's an expensive PITA, and that money and time could be spent FAR better..
 
I installed a header and a glasspack on my tj and boy did it suck. I ended up putting a regular muffler back on. I actually got worse gas mileage also.
 
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