S13 ecu and harness into S14

[DRIFTnGRIND]

I've tried searching different sites but cannot find the specific information I'm looking for.
I recently purchased a full KA-T including a tuned ECU. out of a pre-OBD S13. I am installing this motor and setup into a OBD-1 S14. What complications will I have? Will the ECU mate with the chassis or do I need to rewire it? Do they make an adapter of some sort?

I would be grateful for any help anyone could provide.

[projectRDM]

I wrote up a thing on it a while back. It's not plug and play for certain. All the wiring is done inside at the F3 plug. Imagine it like an S13 SR into an S14, and go from there, the same wiring is required plus more for A/C and stuff.

[silverdemon16]

my friend has a conversion harness for s14 for sale