Hey Big_dan_1950

I didn't use lizzard skin so I can't testify

But I did buy one gallon of herculiner bed liner product.

With one gallon I had enough to cover the entire Cab bottom

And had enough left over to treat all 4 Fenders

The herculiner product is rolled on and I believe the lizard skin is sprayed, but I would think one gallon should be plenty

Good luck

DADS50
YouTube
1950 chevy 3100