From the photo, it looks to be the standard Nintendo cabinet that was used for Donkey Kong, DK Jr. Popeye, etc... and then later converted to the VS. system for Super Mario Bros, Excitebike, etc.
You can definitely convert this to a DK. I bought a cab just like this and turned it into a very nice looking DK. And you can sell the working SMB parts to make up for the cost.