The problem with the written word is that it's very difficult to get a sense of the tone of voice from the words on the page, and one person's reading is often different to another's.
Anyway, I have a Fazer 1000 engine sitting in bits in the garage. I was going to rebuild it after the second gear went west, but even a pattern gasket set was 300 quid plus when I was thinking about doing it a few years ago , so financially it's not worth rebuilding if you can get a complete unit from a breakers for 4-500.
It's the same thing with the R1 in a Fazer chassis - it's not beyond engineering knowhow, but if standard R1 has 150bhp and the Fazer has 143, there's a law of diminishing returns. It really isn't worth it, bar inquisitiveness.
It'd be really interesting to ride an R1 engined Fazer though, wouldn't it?
Or did Yamaha more or less do that and then called it the Gen 2? Which didn't sell as well and hasn't the same reputation as the Gen 1 for rideablity...
Jus' sayin'.
Oh look, there's some pigeons and a cat...