Attached below is a photo of the heat-stove "plumbing" on a 1954 Hydra-Matic 235 engine.

It is very hard to see the "stove" because it is mounted near the exhaust manifold (which is under the intake manifold).

I could not find a photo of the heat stove assembly and associated tubing. Maybe Jon has photos?
Attachments
54 h-m carburetor and heat stove.jpg (117.11 KB, 61 downloads)