I think theirs someone in the states doing backglasses for them.
Look carefully at the repo BGs - one series is clearly different around the orange colour up the top in the Fire Power title.
If you want to do the electronic work yourself yoyu might find the sys6 of earlier games easier to get on top off than WPC of later games, maybe counterbalancing this is WPC being younger should have less issues and higher reliablity.
Anyway a good "problem" for you to have.
