Finn -
Before I jumped in on non-original seats, I would run some ads on this sight and others for some seats and I would definitely check on the suggestion that Xram53 had with RodDoors.
It seems to me that seat frames should be fairly easy to find especially since so many guys "rod" their vehicles and switch out seats. You may not find all the seats in one place, it may take a few. All you need is the frames. A good upholster can make them look good!
My back seat came out of a 36 low cab truck and my bottoms came to me NOS out of a guys attic.
By the way, my right seat half also has the gas tank filler neck spot showing on the bottom of the seat even though my tank is filled under the seat.
