75 Dart Floor pan

What sections to you need. I have some factory floor pans and might be able to get you what you need.

Front floor wells too or just the under seat area?

Yes, front and rear floor wells too. The whole right side has thin spots - windshield leaked. Mostly in the normal areas, but for some reason there is a big hole between the two seat mounting bolts, right on top of a hump. I was going to use separate pans from another source, but would have had to fabricate the parts under the seat.