The transition from the rod to the cable setup took place at the end of 1969. Our Dec. 69 L78 Nova has the rod...our Jan. 70 has the cable.
I will try to dig up a part number...but the last one I purchased came from Wayne Bushey at National Nostalgic Nova...he can help with your interior items as well. Give him a shout...
-wilma
https://www.nnnova.com/