Great to hear that there are other Master plumbers that have installed this "in a flash flusher".Too bad the noise from the 3" plastic flush valve plunger is off the scale of acceptance. They A|S, should go back and take a look at their old 3" copper curtain valve from the 60's-70's ,much quieter.
PS :The bolt on of the tank to the bowl with it small access to get a nut started,especially due to the flush valve gasket is absurb. A|S ,Give us a break send the toilet out with tank bolts that are a little longer. Retards ,instead of design engineers.