Yes, early, 318/340, pre 1970(1969 and earlier) had the timing marks on the balancer on the passenger side. Mopar decided to move the timing tab from the passenger side to the drivers along with switching the lower radaitor hose from the drivers side to the passenger side, why who knows All the 1971 360 came that way also and they where the first V8 motor Ma Mopar made externally balanced with a cast iron crankshaft 340 came externaly balanced with a cast crank also in 1972