Great pictures Jeremi, Thanks! And thanks for your help diagnosing and repairing this.
I just drove it again last night for the first time since I got home and am still amazed by how much of a difference this fix has made.
Since it has already been removed for the photos, the MLPS mounts on the two "shiny" studs in the photo, and surrounds the (rusty part of the) shaft. Although it is designed to simply slide over the end of the shaft, even once unbolted the rust made it impossible to remove cleanly. It had to be broken and pried off in multiple pieces. We then cleaned the shaft with a Dremel tool, as a wire brush proved insufficent. A new MLPS was installed, and the improvement in feel was dramatic. It was worth every penny.
It is worth noting that my car is basically rust-free. I'm guessing that others may have it worse than I did.
1997 Mark VIII LSC 5.0
2001 Dodge Dakota