if you decide to go OBD1, both I an HardLowrdRanger have P28s that can be setup to run B16A2s.
I've had kids come to me for ECUs because they couldn't pass emissions testing (here in Cinci, they're surpisingly strict due to Cinci being one of the most polluted areas of the country... Industrialized river VALLEY) and I've been able to help every one that had a healthy engine pass just fine.
James (HardLowrdRanger) will be able to help you customize the chip your receive more than i will be able to. If you're looking to get a chip that suits your needs very well, I can't recommend his services highly enough. Every chip he sells is customized to some degree. I refer ppl who want lots of customization done to him cause I don't wanna deal with it and he has better tools than I do.
In any case, you can PASS tailpipe testing emissions with an OBD1 ECU, but I do believe that this will cause you to FAIL California Smog. Good luck.