> The left-handed connection type was used
> on non-pollution controlled L/Rs and the right-handed type was used on
> pollution controlled L/Rs (late series IIa starting in '69 and III) to
> achieve vacuum retard.
I know of 3 1970 IIas, a 1969 IIa, and a 73 Ser III that all have a vacume
advance (left hand). All of these had some form of PCV system, but nothing
else in the way of polution controls. All 5 were NADA vehicles.
Pete
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