I've never personally seen one of the motors before either...and I'm not into hondas at all. Everything about the F20B I had read in the past (way before I even joined this forum) stated you could rev them to like 85 stock and that they have perfect bore:stroke ratio. I've also read/heard that they hit VTEC harder then any other motor honda makes - which I also can't confirm.

edit - from a real fast search I found F20B boreXstroke is 85:88mm. B16 is 81:77 like you said.