I did take a look at the parts list posted here, unfortunately the "part" I need (from Isuzu) is basically a whole replacement seat.
What has happend is that the right side of the driver's seat has a pronounced "sag", if you will. Turns out the bearings on that side are shot and so there is a large "gap" that allows the seat to fall backward (well more so than the left side - about an inch).
I couldn't figure out how to load the Recaro parts list so I just e-mailed it to Scott. You can see in the picture that the reclining mechanism where the bearing is located is basically all one piece. Hopefully, buying just the frame won't be too expensive **crossing fingers**