You only need room between the right side seat support and the third bearing support for the chain to run through. Assuming the seat tube, the one running from frame rail to frame rail, doesn’t angle back too much.
Send a photo of the right rear of the kart, looking forward.
206’s will fit nicely on just about any kart. Worst case, cut the right side seat support off and use a bolt one. That’s how Margay does their Ignites. It works fine.