Originally Posted by SA1911A
I just put a Ground Force 1.5"/4.3" lowering kit on mine still running stock 20” wheels with 275/55R20 tires. Front 1.5 springs flip kit for the rear, everything you need shocks and all. Will need to get an alignment ASAP. If you’re good with a wrench you’ll have around 4 to 6 hours labor in it
Their kit for 4X4 uses Torsion bar keys on front rather than springs and the same flip kit for the rear
Update I did have a vibration around 30-40 mph here’s what I did to solve it.
Used shims on axle and plate on trans tail shaft that came with kit for proper pinion/driveshaft alignment, ( I thought) after playing around with it this weekend I found the trans needed to be raised just about 1/32 of an inch added a homemade shim to raise tail shaft. Like magic vibration all gone. I am going to play with it some more to see if I can get same result by changing shims around/out and spacer plate at trans.
FYI everything I found told me angle of pinion is between 3 and 6 degrees