rear seat frame/mounting bracket

Have tried to search for this but can't seam to find what I need so....The existing driver/passenger seats are being upholstered. We purchased our jeep w/o a rear seat. I'd like to upholster a back seat to match the front stock seats. Any ideas on obtaining a rear seat frame and mounting brackets for our 75 cj5. I'll continue searching junk yards but if anyone has any other ideas, they'd be appreciated. Quite interesting ordering parts for a 75.

 

I got an old school bus frame, had to cut it down (too wide) and splice it back , bought foam cushions, backed them with plywood, covered them with vinyl, screwed them to the frame. The school bus frame had a channel on the bottom of it (or I added it, can't remember). I screwed 2 washers ot the Jeep floor and slid the seat in and out - with the washers inside the channel to hold the seat down. When you need the cargo space, lower the tailgate and pull the seat out. I left the seat out on the restoration because it was so darn ugly. Someone with upholstery talent might make a prettier one.

 

thanks for the info.