Upper Control Arms Dust Boots/Bushings

Jeremiah said

Speedway sells nice replacements:

Replacement Screw-In Ball Joint Dust Boot, K772 Application

You can also buy them in a six pack. These boots also work well for steering column tube seals.

Click to expand...

These *might* be too big for the OP's application. The K772 is the later large ball joint, while the '72 and earlier uses the smaller K704. They're the good stuff, and cheap enough, so they might be worth a try.