I agree with rchase,
Go to an independent who knows how and works on theese babies all day long.
The dealerships ran the old timers off and have a bunch of kids practicing on the cars and who 's chest starts to pound if they have to work on one of theese older pups.
Your'e a mechanic, you should be able to look their list over and look at your car good on the lift to see if what they say, you should fix.

Check your suspension out yourself and see what it looks like, then get their opinion when you take it to them so at least you'll know if they are being honest with you.
The antenna probably needs a mast or the motor is weak.
have the engine steam cleaned and shot with leak trace powder, drive the heck out of it and recheck for leaks.