As to Ace's post minding the H23a H22a swap. I still can't figure this out. First Is it a manditory change to swap in the ex. coil? Second If so on a 93 si usdm - jdm vtec there is no plug in. I read that you have to open up the distibutor.
Steps till swap completion:
Ecu Wiring
Header and Downpipe installation
External/Internal Coil work