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Im on the hunt for a dual vac unit for my 68 390 4speed, and a couple of questions.1. I read there was 2 versions, one for matics, and 1 for 4speed.
Whats the difference?
2. There are a ton out there on ebay, mostly 3rd party that looks close, yet all are missing the nut. Anything to be wary of?3. Where would I find the nut?
.Define "nut".
Think he may be referring to the zinc dicromate spring retainer at the end of the housing