I'm positive the speedo is electronic on the 94-01 Integra (DC*/DB) for all model years.
But beyond that, the real issue is convincing the S2K cluster to interpret signals from the Integra ECU. I don't see that being an easy issue to resolve. h: Hence, I don't recall anyone even trying this swap yet.

Maybe my age is showing, but I honestly fail to see the point in swapping clusters.. h: I mean the stock gauges are damn near perfect for legibility.. :dunno: Meh, whatever..

Best of luck.. you'll need it as you blaze this new trail.