Robb is quite correct, by now there will not be much original 1938 about your M20 except for the frame number and perhaps the engine number if you are lucky enough to be one of the few people who have a M20 with matching frame and engine numbers still.
I had the same dilemma and decided to strip right back to bare metal to stop any further corrosion dead in its tracks, then built it up using the closest paint I could find for the era I wanted my bike to represent (BEF France 1940)
Now the bike is nearly finished its going to be used regularly and I wont trailer it around it wont be some mollycoddled prima donna, but I also have the comfort of knowing Ive done the job right and it wont be secretly still corroding away beneath many layers of old paint.
Cheers
Chris C. |