Anthony,
To the best of my knowledge, as long as they have the correct pin arrangement on the connectors...you're all good! I've never had any trouble swapping distributors among 88-91 CRX Si's, or Civic EX's. Replacement parts may be different, based on the distributor number (such as ignition coils), but the fit and function are the same.
If you need any, I've got to have 4 or 5 used distributors floating around, as well as a brand new one.
Good luck.
