Steve, will go with 2C paint, this is more complex to deal with, mostely because I will have to paint small batches of parts, but result should be good.
Good and bad news
The good one is that I got the tubing of front track frame, will do new tubing in 55mm in steel that will be cromed and removable.
The bad part is that the cab got destroyed today, tried to get roof straight but ended up worse than before. Will probably do a new one, this time in 1 mm steel (old one is 0,7mm), was never happy with the thin sheet on the old. 1mm will be more solid and easier to work with.
Dan