Yes I've seen the engines, I have all of them in my shed, 1zz, 2zz, 4A, 7A, 3S, etc etc. If you want over 200kw atw from a zz, throw some sleeves in it when you do the pistons and rods, they're cheap, available off the shelf and easy to fit. The cranks are just as strong as a 4a crank, but aftermarket are available if you want to burn cash.