I have correct used all metal three port vacuum switch that goes in the front of the intact manifold. Not really necessary except if you are going factory correct or want all emissions working. It is date coded on the brass nut part 11 H 69. Not sure what the H is but my 71 has it as well. So this would be correct for most 70 built after that date. No bad pitting or anything but it would need to be gold cad plating to be show. some gold plating is still visible on ports. Tough to find item. replacements are plastic. $40
Dave, Still have this part? I don't care about the date code but need the fitting for a car I'm building.
I still have it. IF I sell it I will have to try and figure which one I should sell. The 70 dtae coded one is actually better than the correct date code I have for my car.
