Hi Tav, Would I buy an NOS dated 100 % correct 70 unit and use it for a driver car ???? NOPE !!! ...Believe it or not that valve was used into the mid-late 70s on trucks also{and who knows when mopar stopped making replacements} so I'm betting the majority of the replacement units are'nt as old as you think...FWIW I've had mine on there over 5 years now with no issues..