I've got that set-up but K4KAS is right. If you're trying to set the pinion angle put jack stands under the springs (so they are loaded with the weight of the Jeep) with the axle sitting in the perch on the springs. Adjust the angle of the pinion until the pinion and the driveshaft (obviously need the driveshaft installed) are straight and at the same angle. Some people say to have the pinion 1 degree lower than shaft to allow for axle wrap under acceleration but I didn't do that. Then tack weld the perches to the axle tubes. You can either weld it out under the Jeep or take the axle out to do it. I welded mine under the Jeep. I'll go take the measurement you've asked for a little later and send it to you.
- 2003 Rubicon - 4" Lift, 35" KM2s, 5.13 gears, winch
- 1968 CJ5 - Dauntless V6, T-86, Dana 18, D27 & D44
- NRA Life Member - Licensed to Carry and Do.