A-body 4 Speed and Pedals

mopardude318 said
Is it safe to say that the 70 and newer trans had the shift interlink side cover? This appears to be of earlier years.?

You'd be correct. 64-70 had the ball detent style (which this one is). 71-Up would have the interlock (raised casting line between detents)

1968 and on tranny's would have the raised machined pad for vehicle serial# and production date.