Well I picked up the replacement head Thursday night and started tearing it down and plugging therm ports last night. I spent about 10 hours today hogging on it and it's done and ready for a trip to the machine shop.
It even turned out looking pretty good! Head on the right is the cracked one for sizing references today.
And yes, I looked like a beat coal miner by the time I finished up.
Now I've taken a cold shower, had a burger and a couple beers and I'm ready for bed.