In process of replacing the floors in my 68 cutlass. Driver side front was rusted pretty bad in foot area and up into toe board. Rear was not bad but had some rust through along the rear brace. Passenger side was ok front but had rust along center brace same as driver side.
So I bought AMD full length halves both sides since they have some toe board area that I needed for driver side. Driver side use whole AMD panel and small part of toe board. Passenger side joining just in front of the front brace fits ok.
Two issues:
1. First I retained most of my tunnel initially with intent to join with the AMD panes about half way up tunnel profile. Not even close, the AMD panel had different profile along tunnel. So removed my original tunnel to just use the AMD halves and join them together in center. This is ok but the width of the AMD tunnel at the center brace is a lot wider than the factory brace with seat belt attachments. So I have big gaps between the brace on both sides where the seat belt bolts go and the tunnel, roughly 1/4 inch. Just use spacers and longer bolts? Any one else encounter this and ideas?
2. Main issue the toe area driver side of the AMD panel does not fit well with factory. The indented area just below clutch pedal is much wider on the OEM panel than the AMD panel. Large gap. I see Goodmark and CHL make toe board panels. Any one have experience with them and the fit to the OEM toe board? Thinking if they fit better I could possibly use that and join to the AMD panel at the lap joint between floor and toe board, Thoughts?

Ill get more pics soon to clarify.

Thanks

 

Interesting work you have going on there. You may want to check out the Body forum as well. Lots of work like what you are doing.

https://classicoldsmobile.com/forums/body-work-67/

 

Some details on my progress.

This is the AMD panel. The stiffener indentation on the left front corner is a lot narrower than the factory panel. Fit was not good at all and difficult to modify with my limited metal working skills. Also on the front right there is supposed to be a little bump up area under the gas pedal, kind of a foot rest. Not present on the AMD panel.
So I decided to buy a Goodmark brand front panel as the pictures looked like it would fit better.


It does indeed fit nearly perfectly with the profile of the stiffener matching the OEM floor very good and the raised area under the gas pedal is there as well. I ended up cutting the front half of the AMD panel off at the area over the front floor brace to join the two panels together there as it is covered by brace so no seam line under car. The AMD panel fits ok in the back seat area. The tunnel is another story.

Might be a little hard to see but the rear floor brace profile does not fit the AMD tunnel profile. I have nearly a 1/2 inch gap between the seat belt threaded hole and the AMD floor pan. The tunnel in the AMD pan is much wider than the floor brace. There is youtube channel "theautorefinery" where he had the same issue. He actually cut the floor brace and widened it a little to fit the floor. I wont do that, he was on a rotisserie so had good access to bottom, I am not so I intend to add a spacer to take up the gap. Probably will need to get longer seat belt bolts ? Not sure yet. Any ideas on sources for longer bolts with the low profile heads?

So my take away is:
The AMD panel is heavier gauge (Believe 18 GA) and a nicer overall stamping with good definition but does not fit well along the tunnel and in toe board area.
I had originally kept most of my tunnel with intent of joining to the AMD panel but the profile was not even close with the OEM much narrower in areas around the floor braces and overall just a different profile. So I am using the AMD panels, doing the passenger side all the way up to the front brace so most of the tunnel will be the AMD panel joined together with a not very good fit especially at the rear brace width. Also the two AMD panels don't fit great where the two join in the middle top tunnel. Passenger side is higher up I will get pics of that once I start the passenger side.
The Goodmark panel (Can only speak to the driver side front back to the front brace) fits very well and matched the toeboard area well and along the front tunnel area that I kept the OEM portion as it has the cut out for the shifter. The Goodmark is thinner probably 20GA and not as nice of a stamping. Also harder to weld the thinner gauge without burning through have to be really carefull with welder settings etc.
Overall really wish the AMD panel would have fit better as it is a nice heavy panel.
So wondering were the GM A body floors a little different between the Chevy, olds, pontiac? Wondering if the AMD panel was really designed for Chevy as most common application? Overall I see good reviews for AMD so curious.
I suppose if you were to do the complete AMD floor with the braces included the fit would be ok since you would not be using any of the OEM floor.

 

I had always thought that one panel was the same as another for the same application- thinking they were all made at one place, then sold thru different venders- you have shown I was wrong. Looks like you did a good job!