If you put the motor in a suzuki a head gasket is not out of your ability. It is a matter of unbolting a bunch of stuff, then take the head to a machine shop or a qualified mechanic to see if it is warped or cracked (cracks between the valves is okay though) Then buy a gasket, clean up all of the surfaces and bolt it back together. You are "supposed" to buy new head bolts as well but after seeing td's put back together with "used" bolts they seem to be fine and new bolts aren't dirt cheap so save yourself the cash and get this headgasket done. Cheers mate 
This is the kind of "overview" I was looking for.
1. start pulling crap off
2. pull head making note of the notches (or in my case two holes) in the head gasket.
3. take head to a machine shop to be pressure tested and checked for straight.
4.ASSuming all is well with the head, slap the gasket down and install new bolts.
5. bolt the crap back on that I pulled off in step one.
6. Find a way of timing this thing.
7. take it for a test drive....