I am not aware of a kit.
You could 3D model it, and make your own kit.
There was a fellow at NAMES in 2019 (remember that model engine show that use to be held up north? It was called NAMES, which I think now stands for "Not A Model Engine Show" anymore, sarcasm intended, put the pitchforks away).
He had it running at the show.
He made all the patterns, and had it cast in iron.
You could build your kit a bit smaller.
This would would be a bit heavy to lift and set on the table.
I wanted a Galloway casting kit, but not at the size that was available, so I have started making my own 3D model, and will cast my own kit.
It can be done.
This is the 21st Century.
I've started another engine. I'm redoing the John Deere model that shows up on my posts. The original engine, powered by air, never worked the way I'd like, so I sold it. The crank throws were 90 degrees apart and it "fired" twice on each revolution. The exhaust was a hole at the bottom of each...