From what has been said about these blocks, the fact that MM has closed up shop was not supposed to affect the availability of these blocks. I think the Chicago Connection was supposed to be a dealer for them. Maybe give them a call and see what the deal is?

http://www.chicagoconnection.us/index.php?main_page=index&cPath=1

There is at least one member here who has one (can't recall his handle), but has not had the engine built yet.