As I recall the poly bushings are for the later style torque rods. Unless your car has had these installed or you plan to install them yourself don't buy the kit with the poly bushings.

Clean up the TA bushings on the outside of the shell and use a lot of penatrant around where they contact the bracket. Let it sit for a while (like a day) before attempting to extract the bushings.

Do a search on the subject. This is a frequently discussed topic. You'll find a lot of info in the archives regarding both the procedure and the tool.

Also, you can get the bushings for less money elsewhere. IPD is a little pricey.
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'80 DL 2 dr