I don't have the jump seats but I do have a Packard Club Coupe and that is one of the few things missing. Do you happen to have a picture of what they look like? I don't know if they folded from the side or the back. I saw a lexus LX-10 where the back seats fold up to the side like jump seats and look small enough to go in the back of a 30's or 40's car. I thought I had it figured out one time. I thought the folding back seat in a Silverado would work but it is too wide for the Packard. I have thought about this a lot but should shut up because I don't even know what you are trying to put the seats in. Chip