Original disc brake parts wanted

So I lost a brake pad in the middle of the freeway, limped my 68 valiant off of i5 and got it towed home. When I took off the calipers to rebuild them, I noticed the driver's side caliper had clips that the passenger side (the side that lost the pad) didn't have. I need to find the two clips to rebuild the brakes, because if I don't find them then I can't rebuild the brakes. Does anyone know where I can find someone selling original parts for this car?