Inside of front fender (per Spyder Factory):
Looks to me like a little roughness in there is "period-correct."
Fuel tank is very big and made of hammered steel.Hammer-tone paint is a start...
...but we'll see if there's something that can be made to make it look better.
I like how they painted the gear ratios on the trans so the pit crew would always know what was what. That's an easy one!