I bought an empty GT 1997 cabinet, cut the top off, and found a Golden Tee 2015 on eBay. (It was a 2007 but updated). Since you did the mame cab, golden tee should be a walk in the park. Got mine set up with GT 2015, silver strike bowling 2009 and target toss with darts. After everything was all over, I put out $2,367 bucks. All that is left is to bring it home and mount TV on wall and replace the overlay. Shop around and send best offer deals.

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All newer Golden Tees, Silver Stike Bowling, Target Toss and PowerPutt all use the nighthawk system. I'm not sure if the Golden Tee complete uses the nighthawk system. I think the nighthawk started with 2005. Just ask the seller. With each kit, you get the computer, a CID(a very tiny board), and the I/O board. But they are not interchangeable. The game won't boot up if you have a golden tee computer with a silver strike CID. I had an oops moment.
After you get the golden tee kit, it's just a matter of switching up the cords. I do it enough to the point where I can change a game over in 5 minutes. That includes the boot up time