I will never complain about my little GZ's problems again. Keep us in the loop as you work through this.
I did see an engine on eBay, by the way. Min bid is $500 though.
http://cgi.ebay.com/ebaymotors/Suzuki-G ... ccessories
I could swear I saw one for under $300 a week or so ago, but maybe that auction ended.