I don't understand the obsession with everyone wanting a 1.8 block...
The gains will be minimal for the costs, just not worth it IMHO. The B16a has like 116tq and the GSR only 128tq, that's not a great improvement...

Vito: Used properly, nitrous is extreemly effective. Don't be afraid to spray. It can be just as reliable as anything else. I know a few peeps who've been running spray for years with no ill effects, asside from needing new tires a lot sooner then most Honda owners.

Im my opinion, the solution here is a small 50-70 shot of n2o, it's just the most cost effective, and productive solution to this topic.
Also the cheapest.