Talk to me once you decide to order the SPI, I can tell you exactly how to deal with customs. My shipment JUST today got over the border and it is actually not as difficult to get it through Barry and Jeff Skinner thought it would be. Still, there are some steps that I can help with which will make it MUCH less of a headache!
I am pretty much planning on doing what you are saying. Epoxying fenders and suck before I tackle the main body. Unfortunately mine is a 1946 Nash, so everything else must be painted at the same time! (Unibody)
Good luck! Talk you Barry if you are in doubt. He has been most helpful answering all my annoying emails