Replacing the subframe bushings looks like such a huge pain in the ass. While I've considered it, I haven't notice anything "thuds" or stuff like that, and I plan to purchase something a little newer within a year. Out of curiosity what's the opinion on something like this:
SPL Subframe Collars
I would prefer not to dump more money into my car than I really need to. If I had a large disposable income, believe me, the first thing I would do is replace the open diff with an LSD along with upgrading the suspension.
Everything I've read about replacing the rear subframe bushings has led me to believe that it's something I really don't want to do.
I do know what you're talking about though after driving a friend's 280z that had blown bushings.