If you're handy with a drill, saws-all, and mig welder, you may want to find a good late model wreck with no floorpan rust, drill out the spot welds to remove the cross brace, and cut out the floor pan panels you need. That will be MUCH less expensive than new stampings. I've done a lot of floorpan patching over the past year and I'm convinced that welding is the safest and longest-lived fix. My research group and I have disassembled entire vehicles by drilling out the welds. The method is a little time consuming, but it works very well.

I know Nova Scotia is a long way from Louisville, Kentucky, but I have a '91 244 parts car that has a pristine underbody if you want to give it a try.
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'88 244GL, '89 244GL, '90 244DL, '91 244, '92 244