Rear Seat Locking Mechanism P/N Help

[wrxnofx]

For whatever reason, my driver's side rear seat is missing the locking mechanism. First, here is the pic of the passenger side (left of pic) with correct stuff and driver's side (right side of pic) with missing stuff:


The PET for my '87 doesn't show anything with regards to parts. The previous PET does show this:




It looks like I need items 17, 18, and 19 for the knob, lock pin, and spring. However, it doesn't show the screw that I'm missing (circled in red in the first pic above).

Can anyone confirm that this stuff is the same for my '87? Also, can someone help me with the part number for the missing screw?

[ben parrish]

I have a pair I would part with...$ 50.00