need new floors...

Alright, so I knew I needed at least just front and rear pans before I decided to take the rubber mats and seats out...to my horror it is much worse than I thought. I already have the front pans (got a good deal from someone I know...75$ for both), but my best bet would be to go for a full floor pan...it has issues under the seat too. I am unable to locate a full one after looking a lot, only fulls for e and b bodies. What should I do about the additional metal that I need? I can get some pics tomorrow...I just need advice. Thanks in advance!