We did the same floor work on mine..Plus new inner fenders and core support..Here are a few photos.

6970407-174.jpg (251 downloads)
1972 Road Runner / GTX 440 4spd Dana 3.54 Just about to turn 26K original miles..

A boat, a GMC truck, some Craftsman Tools, LOTS of Zombie Protection, and a few Goldfish..

If you love someone set them free..
If they come back it means nobody else wanted them either..!!