My rusted out old fenderwell headers have finally bit the dust. They were 20yrs old when I bought the jeep and I have hated them from day one. I have welded them up numerous times, patched them.... ect... This last Rubicon run popped the thermometer on that turkey....... I just pulled the trigger on a set of Novak Buick v6 headers. I am trying to decide what diameter pipe I should use to route the exhaust. I am looking at 16 ga stainless tube..... I am trying to decide what route to go..... 2" from header flange into y pipe and 2.25" into muffler 2.25" into y pipe and 2.25" into muffler 2.25" into y pipe and 2.5" into muffler I am looking for a breathable yet quiet exhaust system. I plan to run the biggest muffler I can fit under the floor board. Tail pipe will exit out one rear side and will be either 2.25" or 2.5" diameter.