Jim, Is the automotive epoxy primer applied from a spray can or do you have to mix it and apply with a brush or roller (like a two-part epoxy garage floor Paint)? I am guessing this stuff is available at automotive paint speciality places? thanks.

I have full gallon of the oil-based Diamond clear Varathane. Was wondering, since the cab is wood and this stuff is made for finishing wood floors, would it not work as a sealer also?

Of all the decal application videos I have seen, Jim's is definitely the best in my opinion. The method of folding /creasing the first few inches of the decal backing (not cutting it) and laying the decal back on it and Jim's method of applying the decal by running his felt squeegie back and forth along the decal seem key as it allows a more uniform way of setting the decal. That plus having a helper to hold the weight of the decal up that allows the backing to just slide back as it is pulled back.