I pust a LS6 into a Jeep TJ and now I need to figure out exhaust. I have some block hugger headers and I am trying to decide between running duals or just building a Y and running a single all the way back,

I have a cam and a little head work my question is would a single 3 inch exhaust be adequet?

I only want to build this once

 

me pesonally, i would build dual 2.5 or 3inch. then choose the muffler you want for what ever sound your looking for

 

If you have the funds/ability go dual. Never look back.