Weight loss.
I’m sure there is nothing there to worry about, but the thin spacer will just give room all over. The kit is nice, just a couple of things I ran in to. They expect you to be putting the kit on a car WITH 10” drum brakes. Not using 10” spindles on a disc car. So I wasn’t expecting to need to change the lower ball joint. The bolt/holes are bigger on the disc ball joints than the bolts on the drum ball joints. No biggie because I had drum ball joints.