Finding a usdm b16 from a sol is almost impossible. But for wiring, just use the US si harness and add the wiring for the knock sensor. That's it. People over complicate things. I know for a fact that the 93 chassis is wried for vtec already, it's just the engine harness that is missing it.

Anyway, this is my last post on this board... Hit me up enlsewhere if you need some help.