Thanks for the input. I will certainly heed the advice and keep any changes reversible.
Thinking about this project, here are my goals, which I hope to be attainable:
1- finish with something fairly close to the look of The original cabs
2- will heed the advice of many and keep changes reversible - this is pretty straightforward, since none of the original components (monitor, wheel, shifter, pedals, boards) are original. Will keep the fibreglass without any new holes (there are some from previous owners).
3-have the ability to play Night Driver through emulation - this is a must
4 - to be able to play additional racing games. Since I have 2 of these cabs, I'd love to be able to play at least one or two games head to head over LAN.
I'm concerned that Goals #3 and 4 might be a bit incompatible, since Night Driver is a 360 optical wheel game, and I believe any games that allow head to head LAN racing (on whatever platform) use 270° pot wheels (outrun 2, Daytona, Sega rally), etc. I'm reading through the various driving cabs threads to figure out the best course of action here. Can Night Driver with fine with a 270 wheel in Mame? Or can some LAN-compatible games run ok with an optical wheel? I think the answer may be yes for both, but I'm not sure just yet what the ideal path forward yet.