I don't see this plate in Clifford's current online catalog, but you want heat to the bottom of the intake manifold, not the carburetor - especially with the climate you enjoy in Tucson. The idea is to warm the manifold just enough to keep the mixture from "puddling" as it gets sucked in. If your intake is machined for a heat stove on the botom, you can add a water box there. Check E-Bay or talk to Tom at Stovebolt Engine Co.
