I am trying to find seat buckles/belts for a 1997 E-350 Club van. When purchased used, it had no bench seats, but it did have belts. I purchased 2005 bench seats (3) which came with buckles for the left and right sides (and middle) but no belts. The two years' belts are not compatible. I am looking for used belts for the buckles on the 2005 seats OR buckles to go with the 1997 vehicle. New ones are way too expensive so I plan to buy used. The questions I have are: Are the side belts inter-changeable between rows and/or from left to right? If you buy new, each has its own part number, but are they really the same?

I have checked the internet. I live in the Seattle area. Any suggestions where else to find?

Thanks
I