Auto carpet.

[Mike66Chryslers]

The color was dead on but a little short for my convertible back seat area on the sides.
Called stock interiors and told them and sent pics of what the trouble was and another set of carpet was sent and it was 6 inches longer.

View attachment 428975

I'd bet that's the reason that ACC's website shows that their C-body carpet is not suitable for convertibles? I've seen several people asking about why that is.

 

[AveryMolly]

It's the same here. The carpet was no more than 6 inches smaller than yours, but that didn't help me find a solution. I still have that carpet as a memento.