Hello,

I am currently restoring all the dual point distributors for my cars and I see that some of them have this type of vac advance:

https://www.ebay.com/itm/1968-Plymouth-Dodge-NOS-MOPAR-318-CI-Engine-Distributor-Vacuum-Advance/254334581130?hash=item3b3785b98a:g:Na4AAOSwPPFdR45b

while some others have this type:

https://www.ebay.com/itm/Vacuum-Advance-Control-Pod-VC184-for-Mopar-Small-Block-Electronic-Distributor/143341368959?epid=75431013&hash=item215fcfb67f:g:ekwAAOSwUPJdPlaK

was that a year change or whats the deal? What is correct for each application/year????