The clank part sounds like the driveshaft; vibration too.You have to remove it to check it; I've had two separate. I run an aluminum driveshaft now. As far as the front end, I've rebuilt it every 100k or so; that stuff wears faster than you'd think.
My '89 is now 10 years older than I was when I bought it.it's old enough to drink and have kids in elementary school.
The 60s Lincoln Continental Energy suspension ones too. Still look good on mine after a year, I think the design is more of a factor in premature failure than the material.To repair te front, all you have to do is replace both sets of control arms, the swaybar endlinks, and the tie rod ends, then get it alligned; youre done.If the strut rod bushings go bad, you're stuck with termoplastic moogs now.