Re: F23a1
Yeah I believe no mounts are needed for a H22 swap in an accord that came with a F22/F23 so H series mounts would allow you to swap a F series motor into your civic.
Might I suggest checking out the F20B and F22B swaps. That's a 2.0L VTEC Motor - bad ass swap no one does, and a duel cam non VTEC 2.2L motor that came in JDM Preludes. The swap can be had for fairly cheap and if I remember correctly it basically plugs into the accord, so you'd have the same wiring problems as a F23.
I don't know much about F23s, I recall them being kind of worthless - even more so then a single cam F22.
F20B civic swap would be out of control though. That motor supposedly hits VTEC like no other honda motor and revs to like 8.5-9K stock or something stupid like that. It's a destroked H22, so it has an even better bore:stroke ratio then a B16. It's like a bad ass, bored out, B16 - it does weigh more though.