Well, I ordered some parts from Rock auto: the plastic inserts shown in post #2 that fit over the nubs on bed and fit inside the hinge are rock auto PN #38641 (crosses from Dodge PN 55275016) for $8. 50 and the tailgate cables #38522 (Dodge PN 55345124 RH, 55345125 LH) for $7. 23.
The price on the LH hinge which bolts onto tailgate (Dodge PN 55274917 described as "Rivet, tailgate, left") is $193 from Dodge and $189 from LMC Truck. I will try finding one in junk yard or repairing mine.
The welded nub on bed that the hinges fit over (Dodge PN 55274936AB "Bushing, Tailgate, Pivit") are $6. 55 ea from dealer so I will purchase them when I can.
I am missing the rubber bump stops (on on each side of bed above the welded on nub/bushing) and are $13. 43 ea from dealer (Dodge PN 55274842). I can't find another source for those so I'll get them from dealer.
Here is my redneck temporary fix using a scrounged up plastic pipe fitting and please don't laugh... well go ahead: