Re: which parts to get?
for your motor: only the electronics are different w/ the obd0 b16a. anything ignition related stick to 88-91 hondas MPFI. everything internal in 88-91 MPFI honda distributor is interchangeable w/ any other MPFI 88-91 honda distributor. the differences are the casing itself. i'm not sure if the DPFI electronics are the same, I know that the DPFI is missing one sensor.
everything mechanical go with any b16a.
so for your case:
timing belt,gasket,seals, tensioner = b16a
distributor cap/rotor = 90-91 integra
also recommend water pump = b16a.