Anyone know where I could find some seat belts for my 74? All of the back buckles are busted out. All of the guts are gone. When I picked up the car, there were not even front ones, but there was 2 set of guts scattered throughout the car & I was able to get front ones at least.

http://i36.photobucket.com/albums/e8/Hazus00/74elcamino_416861_108.jpg

They are just like these ones. I need 3 sets of guts. Looks like this guy has the same problem. If anyone knows where I can get the guts for them or if any of you have them, let me know.
Thanks.