Thanks riffraff,

I'm located in San Francisco, and I found a parts seller that has the correct sized new universal joints for the driveshaft. I'm hoping now that its just a matter of receiving them and installing them, but I'm so busy that I won't be able to do it for another week and a half. I'm hoping that solves the rattle below, but if I do indeed need the shaft parts I will let you know soon.

I also wouldn't mind having that trunk cover (my AT didn't sell with one) if you've got a spare you're willing to let go of.

Out of curiosity, how much were those universal joints you bought?  Part #s?  And how do you know if they're going bad?  I've noticed since I bought my wagon, occasionally when I shift gears (mostly at slower speeds) I will hear a low clonking sound from the back.  Would that be the universal joints being worn?