Breng:
I thought you had picked up a red set. Right?
The gray set I have I picked up on eBay for a good price considering it came with all the hardware, including the top clip (that I've not installed since it appears to require cutting the back wall carpet, and using rivets). My kid seats hold the seat up.
I picked up a can of red interior paint expecting to re color the leather, but another member bought the non-oem folding seats shown, and he was looking for tan. I found a tan set, and picked it up. It includes different hardware which is not nearly as comprehensive. No seat belt rings for the side panels, no bars to hold down the leather strap(s), no top clip (as it is designed for two straps instead). It does have seat belts, bolts, and a single leather strap that can be bolted to the soft top tray which will hold up the seat. I believe that's the original design of these aftermarket folding seats.
So I'm splitting the purchase of the tan seats with a guy that owns a 500sl AMG 5-speed. I'm pretty sure that since the tan seat is not oem, this gray seat is going into his parts pile for a full reconditioning. If it weren't for the gray carpet on the back, I'd think it might be easy. But that plus the dent, makes it a project.
I don't have the red seat yet, but have the tan, and the gray (obviously).