AMD fitment for 68 fastback

My shop recently did much the same work to my FB. Here's what I found: the floors they sell are for 70-76 coupes/sedans -- they are fine except that the hole for the gas tank filler tube is much larger than that on a FB. It's shaped like a square with the corner cut off, while on the FB it's long and narrow with one end rounded (find pictures of the gaskets on some vendor site and you'll see what I mean). The reason this matters is because of the fold down panel and the package floor on the FB -- the edge of the floor winds up right on top of this gasket.

My shop cut out the area around the old gasket and spliced it back into the new floor, so they would have the right shape hole in the right place. If your floor is too rusted to save that area, they could try to fill in the big hole using the FB gasket as a template.