Maybe we could get some engine tech guys in here, lol.
My original point was that a B18b is perfectly fine for making big power, and that the engine swap you recommended was a bit tougher of a swap (or so I thought). Either way, the torque of the H22A would be a welcome upgrade for any Integra owner. But there's only so much power that you can put down on your two front-wheels without resorting to non-streetable tricks and upgrades.
Shingo