has anyone tried to mate a 90-91B16a cable transmission to a
94-95B18c GSR block?

 

Yep, thats the easy way to swap a C1 into a CRX so u dont have to convert to hydro... Its doable... For the most part, all B series will bolt up to all B series trannys (3rd gen Prelude B20A is only exception I believe)...

 

cool good news...

 

I don't think the Accord (goldtop) B20A trans swaps with the Prelude version, and it for damn sure doesn't swap with the new ones... that would make a third different pattern.

That makes me wonder if it had an A-series bolt pattern. Doubt it though.