best dyno I've seen on a street/drag motor b series was a decked and stroked 2.2L b series done by King motorsports and it made around 280-290 whp and your talking about on of the best honda aftermarket shops in the country...
Haha I was going to use Kings car as an example of just how hard/impossible it is to reach 300 NA with bseries, but figured he is too dumb to realize it anyways. Finding a b-series that is still 1.8L that has reached 200 is also hard to find. Most gsr or LS blocks that do it are 84mm+ or stroked. Plus dont forget we are talking about him with GSR cams, claiming it will be easy...