I can't imagine it would be that much different in Minn. vs the NW corner of IL. (where I live). Local junk yards will sell running 360's/318's magnums for about 350-400 bucks with around 150,*** miles. LA's are not quite as common anymore, but those are even a little cheaper.
Other places you can look: Any older, junky or wrecked pickup, van, Diplomat, and the such. Many times you can get the hole vehicle for 400 bucks. Pull the mechanics and the body will bring you a hundred back in scrap.
