The only rattle can silver (aluminum) paint I know of that's fuelproof is the stuff you get at the hobby shop. Lusterkote, Chevron, that kinda stuff. Same for clear.
I have seen some dynamite looking covering jobs where aluminum was duplicated with iron on films cut into scale sized panels before being applied. One was Ultracote chrome and the other was Coverite chrome "Presto". They were to most realistic I've seen outside of using actual aluminum, eg. Flite Metal.