Yeah, I made those wacky rubber mallet head bumpstops for the rear of the KJ, work a treat, but, a bit of a bodgy at the moment, I've used a special industrial outdoor double sided tape to fix them to the lower coil mount, they anit going anywhere with that stuff, but, i will drill and fix them in place propery when I get a chance.
You can see them (just) sitting down the bottom of the coils