Floor Pan Questions

OK, I tried to chime in here earlier but the damn website crashed while I was submitting my reply. Here is a couple pics of an original unmolested floorpan. As you can see in the pic there is a large crease running under each of the front seats, probably to keep it from oil canning. Also, if you look at the drilled holes for the seats you will see 2 sets on the outboard sides near the rocker lip. The outermost set is for a bench seat car and the inner set is for a bucket seat car, which this was. The outer set is plugged with rubber grommets, and both sets are drilled through the lower gusset. If your car has any additional holes not pictured in my pic I would say that you are looking at an attempt by someone to replace the original seats with some other pair. You can also see that the hump is wrinkled where the pan was stamped. I believe this is from where the pan was a little oversized to compensate for the stamping process.

Looking at your floorpan, I would say that it looks pretty good, and unless there are a lot of rusty pinholes that would necessitate a complete pan change, I would maybe scrape and clean it up really good to see if it needs replacing at all. It's quite an undertaking and unless there is a significant amount of detereoration, I would really think about removing the entire pan before attempting to do so.

Hope this helps in some way, Geof