Spare Tire Well Rust - Trunk Pan

I haven't heard good things about Jim's so I would probably order the sheet metal elsewhere.
I'm at the same step you're at; I began sanding down the surface rust at the bottom of my spare tire well and noticed the metal was quite thin. I also noticed a bit of rust beside the gas tank hanger tabs the "j" bolts on the underside of the spare tire well fit into. Since I don't want a hole the appear in a couple of years after I've spent a lot on the rest of the car I'm picking up a trunk floor this afternoon and taking it over to the body shop. I have a choice of going with the entire trunk floor which is in two pieces down the middle or just getting the bottom of the spare tire well (wraps about an inch up the well). Considering the price difference between the two piece trunk floor and the bottom of the well is only $40, I'm getting the two piece trunk floor.

Here's a vendor that sells both the trunk floor and bottom of the well.
http://www.penstar.net/index.htm