Are special products needed to paint the rear bumper cover on my '88GT (black)? The former owner backed into something and a big chunk of paint came off....the bumper itself is ok. Can i touch it up/flash it in for now somehow? I plan on doing a complete re-paint next winter but want to touch it up for this season.

yes you can paint it if you want it to stick you need to spray with air gun and use a flexable additate you can get it at any paint store

Just for getting by, get a spray can of Duplicolor and a can of clear. It just needs sanded, no additives are needed. You also need to spray some primer on just the spot if its bare plastic.