I have a 67 Coupe rear fold down seat and it is missing the rear upright seat cushion it only has the back plate that folds up and down, I want to install it in my 69 convertible. Can anyone tell me if I can use my rear upright seat cushion out of my convertible that did not have the folding seat option.

Thanks
Zak

Is this a hard question

It really is kind of...I'd be afraid to say. I added my fold down
and didn't have anything to start with. When you get that answered, I MAY still have some info on welding the mounts. (It was 20 years ago) I will wish you the best on the project.

PM John (hammered) if he doesn't catch this thread. I think he did extensive work for his '67 fold down seat.

I think there might be some info here:

http://thefirstgensite.com/library/librarydex.htm

I accidentally bought (because of choosing the wrong front/rear seat cushion set) the replacement vinyl covers meant for a 68 fold down rear seat some years ago (#CR468M108F at YearOne) and had to learn the hard way that they are missing about 4 inches to fully cover the back seat of a hardtop coupe...
Thus my professional upholsterer had to modify them a little bit; that´s the reason why my back seats look a bit different from the stock look...



So I can say for sure that at least the vinyl covers of rear fold down and non-fold down seats in hardtop coupes are different. Being not experienced with convertibles I don´t have any clue if it´s analog for their rear seats...

Regards

Thomas