Originally Posted by Hulk
Kevin, you should come drive my 40 for a day. Sprung under. 4" lift and 33" tires. Extended the back drive shaft but no double cardan CV needed. No grinding on the front shaft needed. Did not do a shackle reversal. Did put in some 4 degree shims in the front axle packs (cut and turn is better, as Randy says, but the shims work fine). Also, I have Saginaw PS, which is a great upgrade.
My 4" SUA is similar to Matt's, 60 series PS vs. Sag.
I flipped my rear spring pack to gain 4" of wheel base.
I do not see any need to do a shackle reversal. Jim Chenoweth is not a fan of these either, as he has seen the front driveshaft pogo-stick into the t-case and effectively destroy the t-case in a shackle-reversal rig.