If the clear coat is peeling, it would be difficult to get by with just clear coat. If it is not peeling, talk to an experienced paint guy and get an opinion regarding the feasibility of clear coating. The problem you may run into, and what has caused the problem you are seeing now, is that yours is a water based clear coat. They stopped the solvent based clear coats in the mid eighties. The solvent based was incredibly durable.
Another idea is to go by an Automotive paint store and ask them what it takes to re clear a water based clear coat system.