yes the first three photos are seat parts, the middle photos is the runners that allows the seat to move forward and back, there is a rod that connects the two, also some springs missing
that seat part is for later years like 51-53, in 50 the mechanism was much more strange with cables connecting the two sides
you got what looks like a bent gear shifter lever, maybe it's just a strange camera illusion, or maybe it's not for the truck, but that's what it is
that last photo doesn't look like a truck part to me, it looks like some sort of tool casting and missing wooden parts - but i'm guessing
-s
