I swear be the stuff, it is the best and will last along time. $40 w/S&H is alot cheaper and less time consuming than new metal (which would be protected anyway).
One quart should produce two coats (barely).
Recommendation: disposable brushes and gloves, laquer thinner, work out of seperate container (tranfer with a clean coffee scoup), clean and place saran wrap over can before sealing top and always keep in freezer(not refridge). Be prepared to lightly prime before it sets up. Best of luck with the it!