i have a 91 civic sedan ex i blew my motor so i put a sohc jdm zc in non-vtec, im obd0 im multi-point stock ecu, i bought a p28 ecu and a jumper harness but havent put it in......now if i want to put it in what do i need???? do i need a obd1 zc distributor? or will the stock distributor work? and do i need to make any changes to my manifold?

 

You have a lot to read... It also helps to use the SEARCH function.

https://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/88-91-crx-ef-civic-frequently-asked-questions-faqs-1508680/

If you are going OBD-1 then NO - your OBD-0 distributor will not work as they have different reluctor rings. Read a lot before you do this conversion. It is very simple, but knowledge is POWER!!!