92 MM 4G64 Cracked Head - Now what?

First off I am absolutely new to this so excuse my ignorance. I have built a couple chevy small blocks but I'm trying to mix it up.
Okay so I had just bought this Mighty Max and driven it maybe 2 months when it all at once started getting hot and smoking like hell. Long story short the head is cracked. I want to get it running again, I am having a little trouble finding an inexpensive head to put back on it. I want to keep it simple and I don't want to have to modify a lot. So here's the real question. Galant heads seem a little easier to come by, both are 4g64. What would I be getting in to trying to put the Galant head on my MM? Any suggestions are welcome and appreciated.

Suggestion is to check out projectzerog.com. The right year galant head may work, ive checked into that same swap. But to me its just a well to drop in the natorious bad boy, the "4G63". Boost away happy and with all the aftermarket support you can ever need. Where are you located at anyway?

Get steel seal.

To fix a cracked head? Im confused.