Can't see attachment on my phone. I had an 85 Rz350 that had the same motor in it as a Banshee I believe. Beat Interceptor 500s and a few others with it.
You're right, the 350 2 stroke water cooler is an amazing engine. BTW, watch this when you get to a computer.
I do believe that the big boy 2 stroke that runs almost even with the monster Busa in this video is not an RZ, it is a Kawasaki H2 750cc triple(there is probably a third expansion chamber on the other side of the motor not visible in the film. There is a guy in New York that does miracles with that big 2 stroke (Fast by Gast, I believe).
I used to have a 450 hp turbo Toyota sandrail, so much fun and the sand is like a big mattress! My income went up when I sold it though.....I was always breaking it! I had a blow up doll (with her mouth opened up wide) that I secured in the passanger seat with 5 point harnesses when I raced....drew many laughs!