I have been working on mine now for quite a while.....most videos seem to say that this is done in a day or two.....hmmm. I bought this car because there was not much rust, and esp in the frame members, including the subframes. The main problem on this one was in the driver pan. I ordered one that was maybe the only one available from C2C, and turned out to be decent. I also had to get more metal to form another pan behind the main floor, that goes under the seat. Maybe this one was overflowing from the cowl....unkn yet. So, after the fun of interior removal, with help from the forum esp for the console, I found two layers of carpet, and rotted pads. But, great paint under most other than the known offender. So, lay out the damage area, check under for wires, cables and brake lines, and cut out. Leave all on the cross members. Still some minor problems outside the cut area. Since the main pain is not large enough, begin to fab several other pieces, some of which will go in first to make new landings for the big pans. Lots of cleanup underneath and rust prevention. Finally get the new pans in the general vicinity, put them together and again adjust the fit. Now, prime, paint and get ready for the panel bond.....not the weld. I do not understand how anyone might think they could find enough good metal to weld to, OR be able to cut the old floors to match a new pan for welding....butt weld that is. I am happy with this plan. From the bottom, there will be seen the overlap joint. I am going to seal, then use bedliner to seal and cover. This will all still be visible. For the purest, if you want to later cut and weld, have at it....as I will do my best to maintain. My fav product to date is the eastwood internal frame treatment. I would not think it best as underlay, but great for places that need rust treatment and sealing. I still prefer the etching primer for most underlayment work, after trying to get to base metal, but it will help on some rust as well. So, I am almost ready to glue the panels in, and will follow up after they are in and I do some testing etc.