I do know that the engines rock differently. I think the B series rock forward and the H rocks back... or it might be the other way around. Plus there isnt much wieght difference from a B18 to an H22, just use a good set of coil overs.

Most likely you will have to ditch the power steering and AC

Also moving the mounts back a little and cutting away some of the firewall has been found to line up the drive shafts a little better. There have been alot of people with the hatches that keep breaking drive shafts and this solution seems to have worked. But yeah check out Honda Tech.

Im looking there for info on my swap.