There is a battered 300D on Craigslist with a working engine in Toronto for $600.

http://toronto.craigslist.org/car/349304968.html

Dunno how bad the "leaks" are.

Alternatively you could call McNally and Fiorli and some of the other indies. They might have some ideas about where to source the engine .... but the freight out to NB will be a killer. I am sorry about ur engine and good luck.