I know this thread is for a 123 series trailer hitch, but I am looking for a 124 series trailer hitch for a 1987 300TDT. Does anyone have any thoughts on how to get one or who the OEM manufacturer was?

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1987 300TDT smoke silver w/ burgundy leather interior
2000 VW Passat wagon indigo blue w/ beige leather interior
1985 Mustang SVO
1970 Chevrolet K10 fleetside, shortbed