I have seen that a d16y8 can be swapped into a CRX, so the y5 should be possible too, since the only difference is the head / ecu / 5 wire o2 sensor (right?). But what I'm confused about is that I thought the y5 ecu would require OBDII.. is that right?

Ideally I would hunt down a CRX with a d16y8 already swapped in, and then just put my y5 head on it. But that brings me to the other big question -- which CRX to get. I am almost sure that I want an HF, but what year? I figure I might as well get a 90 or 91, but they are a little heavier than earlier ones. I don't care much about creature comforts, I just want a car that is as light as possible and doesn't look super old and can have my y5 swapped into it.

What do you think?