Heat stove and heat riser question

[chewychevy67]

I've only had 67s recently so I know 67s had a heat riser by the exhaust manifold but 67 never had the heat stove on the manifold to the air cleaner. When they added the heat stove to most 69 models did they have both the heat stove and the heat riser going forward or was it 1 or the other each seperate?

[Stocker]

All I know is my '72 had a heat riser on the passenger side exhaust (removed many years ago) and the stove on the intake which operates the choke on the Quadrajet.