DTS,
I was able to check today, and I do have both rear fiberglass buckets. One has OE tan leather upholstery (not very good), and one has just the foam. The one with the upholstery has the '74 horizontal pleats. I think the foam is the same for rear seats in all e9 models. These seats were from a '74, and I paid $125 for them. If you want them, they are yours for that, plus cost of a box and shipping (I'd have to check the weight, I think they both can go in one box and be less than 60 pounds. My zip code is 19382
I can take pix - send me a PM with your direct email and I'll snap the pix and send them within the next day or two.
Cheers,
Gary Knox