I have a full set of ipd poly bushings (part installed, part still in the box) and the only ones with two halves are the front control-arm bushings. All the others are single piece with an inner sleeve that presses in after the bushing is in place. Don't know about other brands.
Better? That's a matter of opinion. So far I've installed the front sway bar, both torque rods, and the panhard rod and I like them better when I'm behind the wheel. But is that the poly or because I needed new bushings anyway? The main reason I went with poly is that I want this to be the last set of bushings I do on my '92. Another nice thing about poly is that it will press in with a bench vise. As far as I know, you still need the "tool" to install the rear trailing arm bushings because they're attached to the axle. The "tool" might make things a little easier than wiggling under the car with a bench vise, but people here on the board are creative :)
And, if you have the "tool" you don't need a sawzall and chisel to remove the rear TABs.
Removing the trailing arms, and the control arms and torque rods, etc. is pretty much a requirement for changing bushings.
FWIW, I did the sway bar, torque rods, and panhard rod at home with basic hand tools and a bench vise and not a lot of trouble. But, I will pay a mechanic to do the rest because I need to devote my time to other things and I need a car that's on the road and not on jackstands. If you have time to kill and enjoy the challenge of learning a new skill, by all means, change your own bushings, but have a good backup plan. If not, consider buying the poly and taking everything to a good shop. A car that's given you 18 years deserves a treat.
Good luck.
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Jim - '92 Red 245 193K, and sometimes an '85 245 275K+
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