It's an automatic. If those lines are the little ones that went into the bottom, I have to replace them anyways. Those radiators are pretty pricey though...
Actually, that was my mistake - that is a manifold, and it's the exhaust manifold. I was thinking the "dandruff" was a type of corrosion you only see on aluminum.
Until I can get a hold of a camera, would you happen to have a picture of how the engine should look?
It's not much harder than changing a tire: You unbolt the wheel, pry the center cap off with a screwdriver, remove the cotter pin with a wire cutters, and then remove the big nut in the middle of the spindle. The drum should then come off if you pull on it hard. I'd probably have a machine shop press in a new bearing race. Not particularly hard.