Look at the upside, you won't be dealing with rusted frozen manifold bolts. I had one engine freeze like that on me, it was in a 62 Ford Falcon, luckily it did what it was supposed to and blew the freeze plugs out, parked in a garage for 3 days while it melted, hammered in new plugs and all was OK. Good luck and yea, it sucks when things happen this time of year and you don't have a garage to work in.