I use single stage acrylic urethane, but yes you can buy acrylic enamel.
The single stage stuff will last we after the clear is peeling off wet sand and buff that 20 year old single stage IF still enough, and see it shine some.
People (some) now are so anal they have to paint and clear the engine compartment, bottom side and even the friggin engine! But remem:poke:ber don't be pissed, I am old and senile!
