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Monday 12 March 2018 at 22:14
TL;DR - It will fit WPC95, but you should buy the newer version if you can.
That particular pinsound will work w/ WPC95.. it has the adapters to fit in each of the supported platforms backbox mount, the board itself can handle each of the different systems inputs.
The model on ebay, is the prior ver...
Source: http://pinside.com/pinball/forum/topic/whats-fs-in-maryland-right-now-maryland-fs-thread/page/161#post-4277268