It's says Data_East on the board.
yes of course it does. However it was VERY VERY VERY common for arcades to put new boards in old cabinets to keep them making money. It's called a "conversion".
This is what a Williams Defender cab looks like:
you can see it looks nearly identical to your cabinet
This is what an original "dedicated" (meaning not a conversion) Fighters History cabinet looked like:
As you can see it looks NOTHING like the cabinet you have.
So the question being asked here is what do you want to do.
"Restoring" this cabinet would entail converting it back to Defender (if that is indeed the original game that was in that cabinet). Sourcing original parts, original monitor, buying stencils so you can repaint the cabinet art, etc. If you do this right here this will have the most valuable end-result, but it's also the most expensive and most challenging path, but it's also the one that does the most toward arcade preservation. Here's a good example thread of that:
https://forums.arcade-museum.com/threads/my-story-my-defender-restoration.125726/
If your goal is to have an "original" Fighters History, then you need to sell this cabinet (maybe to someone who wants to restore a defender) and start searching for the correct cabinet for Fighters History.
If your goal is to just have a/any cabinet that you can play fighters history on that's your cheapest/quickest option, but the end result isn't going to have any real long term value or preservation merit, but it's a perfectly fine option if you're just looking to have something that you can play and enjoy.