I personally knew a man named Art Bose. He made, in house in Chicago a turbo kit for the "Water Buffalo". My job dictated that I install these kits on said motorcycles.
My job also entailed that install NOS kits on ZX1000's (among many others) when such a task arised.
I did my duty as required by my employer at the time including but not limited to taking said bikes home for the weekend to work off hours to facillitate the tuning process as well as to ensure the ultimate satisfaction of the owner of said bike.