The diameter of the metal roll bars is the same 97-06. The padding is just thicker. If you have a soft top, the bracket on the rollbar extends a little to the rear to clear the thicker padding. If you use 03-06 padding, you may have to cut sone of the padding away.
2003 TJ, 33" BFG AT, 2" BL, 2" BDS spring lift, 55w DDM HIDs