Hmmmmm ... white is always a problem, but may not be insurmountable in this case, if all you want to do is the numbers. Trying to do the Erickson Air-Crane lettering is going to require some custom printing by someone with an ALPs printer.
I think you can handle the large numbers with white and clear decal paper. Print out several sets of the numbers in black on the clear paper. Using a brand new No. 11 hobby blade, cut out one set so you have hollow numbers in the decal paper. Lay that over the sheet of white decal paper and lightly trace it over to get the duplicate white numbers. I will warn you in advance, though, that doing it this way will make it pure hell to get things to line up. BTDTGTTS. But it is cheaper than getting everything custom printed.
That's a weird font, too. I don't have anything offhand that looks like that ... kind of a NASCAR look to it.