I too have a squeak from the right side front.
Just yesterday I completed basically a complete
refurbish of the front end,including upper and
lower ball joints, upper control arm bushings,
lower control arm rubber bushings, strut
rod(control arm to frame) bushings, new wheel
bearings inside and out, new rotors and new pads.
Guess what? I still have the squeak!
I will have to have someone stand in the van with
the front door open and bounce the van while I lay
under the right front to see if I can pinpoint the
source. The Van rides like new so the work was
still worth the time and expense. Just my .02$
Tom Czerniak  1987 Westy 16500 miles and gathering
parts to do a I4 conversion!