Wrong Parts to Repair a Spool Mount?

** UPDATE, See Post #7. I ordered 2 of these and the one I opened initially had the wrong part in the box. **

So re-gasketing the headers to fix an exhaust leak turned into a much bigger project... but dealing with the subject at hand, I decided to fix up the motor mounts while I had things apart. Rock Auto lists them as all about the same thing, number 2369 if you want to reuse the bracket and just replace the bushing. The car in question is in the orange box on the pic below:

Motor Mounts - Rock Auto.jpg

I checked with a couple local places and after striking out on the first two tries, AutoZone said they could have two of them in next day. I picked them up today but ran into a problem when I couldn't get them to fit in the old brackets. I first pressed out what was left of the old rubber, as I was expecting them to fit into the steel retainer piece. There was no way this was going to work, so I knocked the retainer out of the bracket, but it still wouldn't fit.

Mounts 1.jpg

It's a little too wide.
Mounts 2.jpg

And even if I opened up the bracket a bit, it looks like it going to have to much gap on the other dimension.
Mounts 3.jpg
Is this really how these parts are supposed to work? I can always try to return them for the style that includes the brackets, but I'm trying to keep as much of the original hardware as I can. Any ideas?