My truck visibly sags lower on the drivers side, I broke out the tape measure and confirmed it sits just under an inch lower than the passenger side. At first I thought it was the lift spring sagging, but I noticed the driver side shackle sits like this /-/ as if the truck is pushing against it. I got to measuring stuff and found the cast part of the D60 housing where the spring mounts is almost an inch taller than the driver side spring pad. Seems to me the only solution is a taller spring pad to correct the ride height of the truck. Anyone ever heard of that being a problem with a stock axle?
