Jumbo Jet,
How did you make your lowering kit? All new material or did you modify the original spacer?
I have a power hacksaw so could easily cut some off the original spacer, would want to make sure the cuts were parallel with the original surface so the drive shaft angle was not changed. But I could only cut off an inch because the projection that engages the jounce snubber is only an inch above the spring. I could cut off a little over an inch of the spacer above this projection, but would be lessening the available jounce travel.
As far as the front end goes, if I had more nerve than I have, I'd try torching the springs like we use to do with our cars many, many years ago.
Also I could swear there were rubber jounce snubbers on the front. They sure aren't there now.
Bob