Two strokes are loud, frequently rattly, often unreliable and are an environmental nightmare, but I like them.
I've never owned a Kawasaki triple but always wanted an H1E (the first to have a rubber mounted engine).
The 750 (H2) was meaner - if you put your cutlery into your tumble drier, that's what the engine sounded like.
I'm not a fan of custom bikes generally but this one I like:
https://rideapart.com/articles/bike-week-kamikaze-h2
The noise must be incredible - 3 expansion chambers, no airbox.
My friends H1A used to do 22 mpg - I'm guessing this H2 will be worse, but fun though.