I tried to find something on replacing the rubber underneath the van, but I couldn't find anything. If you want to keep things clean I can delete this and follow up with the thread that's available. If nothing is started already, I'd like to see what's out there to do the replacement. I kinda want to do just about all of the replacing if needed all together.
A couple of pics are here,
I believe this is part of a front sway bar on a 87 4x4, all pics are to my 4x4, but I'm betting that this is valid for many other vans here,
MOD EDIT — These are called front stabilizer cushions. They are part of the stabilizer bar system.
MOD EDIT — The rubber bumper for the lower A-Arm is: BUMPER, FRONT SPRING, NO.2. The accordion rubber boot is: BOOT, STEERING RACK, NO.2. In the picture below, the drive axle and boot are removed (not visible).
That's it for now. I'm sure I'll have other pics and questions regarding this .