From the Portland Terminal diesels rolling stock, I'm in the process of repainting a GP40 locomotive, as these two images shows the preliminary WIP.
»»» Important info needed to continue with additional B&M schemes. I would like to repaint this GP40 with the following logo scheme and different numbers placed at top of main body and inversing the number board (white numbers on black background), as showned by :
My questions to RELOCATE the engine nos. from cabside to top of engine body :

1. Is this operation feasable ?
2. If so, In which .bin files are these numbers given its location ?
3. Does anyone know the procedure or have a sample code to share ?
Any help, would be greatly appreciated and I'm willing to put whatever time it requires, as I do not know where to start or what changes have to be made.

Thanks in advance,
Bernard