Got a '92 Prelude BB2 H23a1 and will be swapping to a H22 in the near future. I am having a custom wiring harness done and would like this harness to be interchangeable with both engines, easiest way to do this is to convert my H23 over to an internal coil. Can anyone give me a detailed write-up on this or forward me to where one exists? I'd really appreciate it.

 

These guys have some good info on what you're trying to do.
https://honda-tech.com/forums/honda-...-coil-1709906/