Thanks a lot for your answers ! The setting up of the controllers will be quite a fascinating challenge. Sorry to repeat myself but I sure hope you will share your advancements. I will follow them with passion and I am willing to help if required and tests different solutions on my side if needed. I have gathered and setup a great number of racing games already and just need to find the strength and motivation to continue on. I have a G27 so I will encounter the same challenges as you will.
I understand why cutting through an original cabinet makes you feel bad, it's not like creating an homemade replica, but It will definitely be worth it in the end. As you said, being able to to scroll through the ages will be a fantastic experience. The racing games are a very good examples on how the video games have progressed.