I had a bunch of Valspar Tractor and Implement paint from Tractor Supply left over from another project so I used what I had on hand. Color is International Harvester Red in rattle cans.
I sprayed the clear with some hardener with a gun after the paint cured for a couple weeks.
When I did a couple tanks I found a rattle can clear with hardener, Spray Max 2K Glamour High Gloss Clear Coat 368 0061.
It did quite a bit – a 3, 4 and 6 gallon tank and the top & side cowls on a Gale 25hp, with a little left over for other small parts.