That links says they're for the front-if I'm not mistaken, you probably have the 10x1 3/4" rear drums-probably the "bell" type. I've had some problems finding replacements as well. I'm pretty sure one of the members has posted a part number for them but I don't have it. I'll probably upgrade to rear discs eventually.
Yes Sir-surely was. My friend lives near one of the little Shasta outlets...I need to get with him about the name of that burrito place...frickin amazing.