[old31]

Am I correct that the tank is currently blue?

Yes, you can paint the tank while it is in the car. But you will have to mask out everything, and I mean every square inch. Ceiling, seats, glass, floor, doors, steering wheel, firewall, shifter, hand brake.

You could either go single stage of base/clear coat.

You're going to have to find a pinstriper or mask out the stripes yourself. Take pictures as to how it is currently done.