Welcome and good to see someone with space for a later big cab, many of these won't get saved due to size
Been on ebay for a while I seem to remember, was it Play Leisure selling it?
There are people with them looking on google, I would ask for some measurements and make something or get place to make it, not too much work really, though depending on space you could shorten it a bit so front and back are closer
You thinking of restoring it to just that game or making a multi game cab
I have to remake part of rear seat section for my Continental Circus as the bottom part that should have wheels on is missing, why I have no idea but was how it was sold on ebay, nothing I can't do, looks like i'll have to make the wheels myself copying the originals from front section