Ms Pac cocktails came with 2 different control panel widths. 9 inch and 11 inch.
I don't know the widht of a Tapper cocktail control panel but it's definitly not 9 inch.
Also the wood top (or opening) for the monitor is a different shape. You would have to make a new piece for that. And if you do that, then the side piece attached to it would also have to be remade.
And I'm sure the monitor mounts different as well.
Not to mention the vault door under the coin door.
I don't think the juice would be worth the squeeze on this one. It sure as heck isn't going to be as easy as converting a Nintendo game, for example.