stock tj parts
I run the 5x4.5" conversion on the front - increased my milage slightly and seems to smooth out my on-road ride. I used the Brembo slotted rotors in the front with Hawk HP Superduty pads. Increased braking slightly. I used a local machine shop to bore out the centers to WARN specs. A recommended upgrade. I have ARB air lockers so I wasn't concerned with engagement problems, just wanted to have a free-rolling front end.
Although WARN recommends 5x5.5" for tires over 33", I am running 35s with not a problem on or off road to date.