Are all b-series dizzys the same? b18a vs b20b

I'm compiling parts for a swap I'll be doing soon. I have a 90-91 integra dizzy. I am hoping to be able to bolt it up to my new engine which is a b18b block with a b20b head. Is the bolt pattern the same with that dizzy on the b20 head? I also had another question.... are all the b series dizzys bolt patterns the same? I mean, are all the b18a and b18b dizzys have the same bolt pattern just different plugs?

I was wondering becuz I can also just get a b20 dizzy and swap the plugs on it with my obd0 plugs.

They all bolt to the head the same way. The only difference is depending on whether it is OBD0,1,2. Each OBD distributor has a different wiring setup and different plugs.

well, that's all i was wondering because it'll take me about 10 mins to swap to the obd0 plugs since i'm an expert at wiring :)