I think that the stuff with the little square raised bumps rather than the diamond pattern looks better on old trucks. I have an old fuel tank I can take a picture of with the square stuff if you would like to see.
I don't know if you can buy it now days though?
Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-