The rubber bushings in mine looked ok when looking at them from under the car, but when I got the mounts out of the car I found they were dried out and cracking. Given the age of your car, I would expect yours to be dried out also, unless they have been replaced previously.
How do I get in touch with this IMPCO company everyone refers to, to rent these tools? I plan on ordering some parts and doing my upper and lower ball joints the end of July, over a weekend.
And have fun!
1989 560SEL (172k)
1989 325IC (122K)
2004 Suzuki Volusia LE (3500 miles)
2005 Yamaha Road Star (20 K miles)