Southern Polyurethanes. Any one use them?

How much of the universal clear would I need for the entire car? Were it mixes 1:1 2 quarts would make a gallon and a gallon would make 2 gallon. Is one gallon of clear enough for the whole car?
Also would this work ok over a lacquer basecoat??

A gallon should be plenty, mixing into 2. I'm not sure about laquer. Shoot Barry (the owner) a text and he'll answer. He is awesome at giving advice and support.

(404) 307-9740