I would recommend you stick with a D16Y8 engine if you plan to go with a D-series swap. I wouldn't bother with just a head swap unless your in the mood to learn to do that sort of stuff. The lower compression pistons of your non-VTEC engine will hurt your final power output. The shorter gearing of your non-VTEC engine will also hurt performance. Here's an interesting link you should read.

https://www.honda-acura.net/forums/s...d.php?t=126268

I don't know if his issues were ever resolved but those are some of the pitfalls of trying to bolt an OBD I engine into an OBD II chassis.

The same can happen with a 1st gen JDM B16A swap (what I'm assumign your refering to with a B16A1). Aside from the above mentioned OBD issues (a 1st gen B16A will be pre-OBD and even more of an issue as they are no pre-OBD to OBD II conversion harnesses), a 1st gen B16A will also have a cable operated clutch, as oppsed to your hydro setup that was in all '92+ Civic's. There are workarounds for this, I think HASport makes a conversion mount and adaptor but you'll be much better off saving your money and buying a later model engine.