Forum member live4redline made an interesting point that only now sank in:
Why not? What could possibly go wrong?
Tim & Darin (well, anyone really ) do you know if anyone tried using the engine coolant circuit (specifically the heater circuit) for an air intake heater on any other vehicle?
Click on the photos to see their respective product pages for further details. These seem to be around $100. It would be interesting to find the smallest one and experiment.