Originally Posted by jaycenk

2 1/2's even over the axle can be done with stock parts still in stock places. Pan hard allows a slight left right movement of the rear as it travels up and down. Changing the geometry changes the characteristics of the way it moves.

Originally Posted by LT1

I would recommend 2.5" setup.

I'm running 3" x-pipe to dual 3" muffler and 3" inch tail pipes, it sounds awesome and makes good topend power. But, 3" setup sucks for daily driving very little ground clearance. It scrapes on speed bumps, steep driveways, and going fast on slopey roads.