Rear Spring Plates
After literally at least 12 hours of removing and reinstalling spring plate, I think I'd recommend an adjustable coil-over shock. The main reason to remove the spring plates may be to just notch them. About 1/4 notch on the bottom of the stock spring plate, so the spring plate gets more travel before it hits the stop is about right. More than this and two bad things happen: 1) You'll go over 12 degrees angle on the axles and trash your CV joints. 2) Even on the IRS you'll have too much camber.
This photo is the stock setup, before disassembly.
