RE: Have questions, need answers please:
It's up to what type of finish you're looking for. If you don't mind the look of painted wood (with wood grain showing through) you can just paint it with fuel-proof paint (or regular paint with a fuel-proof clear coat)
If you don't want the wood grain to show through, there are many techniques you can use to fill the grain first. The most common is to fiberglass the entire surface.
If your present covering is MonoKote, the hardest part will be removing it! Heat will help, but that stuff it a bear to get off cleanly