I've done it before on my 86 crx when the timing belt broke and bent a valve or two. Not just anybody can do it. When i had mine apart my cousin came by and saw it in pieces and said how in the heck do you know what your doing. You have to have some mechanical ability, tools, and the service manual for your car. I had a machine shop rework the head. Was'nt to expensive doing it myself, other than redoing the head after it was off. A cracked head will have to be replaced though i would think. Absolutely get a used one somewhere. I'm sure a new head from Honda would cost more than your cars worth. I remeber i got a gasket kit for reassembly. I remeber i also had to put a seal on the end of the shaft after they reworked it. The seal came with the gasket kit. And like jaja said, it would be dumb not to go ahead and change the timing belt, other belts, and water pump while its apart.