that pitman arm nut is a 33 mm, i just finished installing my 4 inch rc lift kit this week. and i too have a 97 TJ, I sprayed all of my bolts with Pb and a few of them gave me some touble but the rest came out alright. I had a lot of problems with the piman arm though. But one thing that was mentioned to me on this board was that unless I was lifting the jeep more than 5.5 inches that I would not need to change the pitman arm. I haven't tested it out yet b/c I am waiting on my new tires. But as soon as I get them I have to check to see if I have bump steer b/c of the drop pitman arm. good luck with your lift.
Auto tranny w/Currie deep dish auto tranny oil pan, D30/35 w/ 3.73's, 4" RCX lift, 1.25JKS BL w/1" MML 32x11.50 Maxxis Bighorn on 15x8 Crager Black "D" 342's
Custom Stinger with Shackles on the front, Tire carrier/bumper in the back, skids/armor from radiator to the rear diff. [/CENTER]