Need help sourcing rear seat mounting hardware

[yzergod]

Just picked up a ‘79 Suburban Scottsdale! The passenger rear seat bottom (the “40” side of the 60/40 split) is missing the hinge front and the clamp rear mounts for the seat bottom. I cannot for the life of me find this hardware! I know these are going to be a junkyard only part, but squarebodies are like gold nuggets in these here parts. I’ve been to every junkyard in a 200 mile radius and the online guys want me to buy the whole seat. Does anybody have a bead on a parts rig that might have these? TIA!