THe pistons will not, the F-series is 86mm and the h-series is 87.5 with out boring it and I think that would require a sleeve job, but not sure, and you could use the rods, however they are different lenghts so you would have to get custom pistons but the H23 rods and the F22 rods are the same, you can buy Probe Ultralite rods for the F22 for about $300. I got these rods after talking to importbuilders for the build up of my F23a1, the H22 rods though are longer and can help you get a better Rod/stroke ratio to help if you plan to rev it high. Crower and many other people sell rods for the F22 but they are exspensive. I have no idea about the head but I assume dohcvtec_accord is right that some parts may be interchangable but I would assume the valves are different, I know even the F23a1, a4, and a5 all use different valve configuration and sizes. Call flatlander racing if you need help, they helped me with getting the custom pistons and matching them to the rods. Hope this helped some what.
