The lower control arm bushings where the self-leveling strut & hub knuckle connect on my 1988 300TE wagon is squeaking when the suspension moves up & down.

Has anyone R&R'd these ? If so, any tips ?

From reading the factory manual, it looks like a minimum of 4-5 hours per side.

Also, does anyone know if you order a NEW rear lower control arm (124 350 53 06) does it come with all the bushings installed, or if some bushings, which ones ?

Thanks,
:-) neil

After some searching, it looks like the ball-joints are in the rear hub/knuckle assembly, not the lower control arm.

Does anyone know if a new rear hub/knuckle assembly 124.350.10.32 / 11.32) comes with these ball-joints installed ?

:-) neil

See this thread dealing with the same subject:
Rear Outer Bushing Joint Replacement

I do not know if a new hub comes with the bushing.