Trailing arm bushings, I need an education Options

[ottox914]

I need to replace trailing arm bushings. I have had a loud "KLUNK" in the rt rear of the car for a bit. I kept thinking it was a shock bottoming out. I took the wheel and rocked the car back and forth by pushing and pulling on the top of the wheel, and could make the klunk happen. So not shock oriented. I had a friend rock the car by using the tire, and I stuck an arm under the car and could feel the motion between the trailing arm and the inner mounting ear. And the klunk. I did the same test on the driver side, and felt some slight movement, but no klunk was heard. Was the movement normal for a 40 yr old car? I don't know. But I'm pretty darn sure the the rt rear needs replacement.

If one is bad, can the other be far behind?

Considerations: I need the car this weekend for an autocross. And the following. Points are at stake here. Can I crank on the 2 nuts holding the trailing arm in place and buy one more event? After this weekend, I have the following week, 24-28 to get this done. A double header event on the 29-30 has me needing the car back in action.

The super $$$ elephant poly bronze looks nice, how hard are they to install? Delrin (?) is much cheeper, but how hard to install? How easy are they to mess up if you end up doing come custom fitting, which would be a real problem if I couldn't get additional replacement bushings fast enough? Having never done this, how much time to budget? Any good write ups on the process? Should I be doing wheel bearings at the same time? How hard are those to do? Time will not allow for fancy powder coating or such. I'm thinking of a quick remove/repair/replace. Anything else I need to be aware of?