Is there anything involved in just putting a h22 head on, any machining, ect?
no, the biggest mod is modding the water pipe, which i just chopped the h22 and f22 and welded the H end on the thermostat side...
also you have to get H lower timing gear and water pump gear, and press it on the F water pump. i also staked mine since it didn't fit as "snug" as i wanted it to...
there are also 2 oil drain plugs that will need filled, i filled mine with JB Weld and 1/2" bolts i believe?? whatever bolt fits snug in the hole after you cut the head off it.
there are a few more things you do, prelittlelude on H-T did a really good write up, that is my best suggestion. I'm sure there are a few things I've missed, its been 3-5 years since i did that part of my build. I know if you have a non-vtec block there is a plug you have to remove from the block so the head gets oil, and some other things I'm sure.
any questions, HMU, you can PM me and ill give you my number.