Do I need one?

For many many years, Ferd used a coolant heated carb base on it's engines. "I guess" they worked well. I've been around a few engines that needed carb heat. One was a Chev inline with headers, way WAY back in the mid 70's. "Some girl." I tried to help her out. We MADE a carb base water heater and added it to the what, Clifford? manifold? And took her stock filter and built and air intake stove---which the truck had factory, anyhow. It did help

And I remember a couple of 'vair powered sand rigs in San Diego. You could sit there on a hot summer day and generate FROST under the carb box on the aftermarket steel tube manifold.