The keyboard mod was done by laminating a couple layers of heavy black construction board. I then printed out the keyboard overlay on label sheets, adhered them to the board, then cut them individually with an x-acto knife. Once cut, they are then "laminated" using clear heavy duty packing tape to protect the label and give it a finished look.
Then you have to map the keys within the FSX configuration set up. The actual out of pocket cost for materials is probably under $25 - depending on how much you spend for the keyboard. You can get by with a basic $15 keyboard as I did. You really don't want anything more than a basic kb.
More than the cost is the time. I'm not sure exactly how much time I put in to keyboard mod alone, but figure 15 minutes to fabricate each key/switch.
One of these days, I'll make another for myself!
P.S. Glad you like the looks of it! Thanks!
The 401st Bomb Group - Deenethorpe
"The Best Damned Outfit in the USAAF"