Quote: NAPA sells a heater you can put in the lower rad hose, just cut the hose in half and clamp it in place. They have different sizes and cost about $35.
Good Luck
I searched the NAPA web site and here is an example, 1-3/4" hose, 600 Watt NAPA KAT 14700 link
I also looked at the Autozone web site, and this looks like the same thing for $24.99 Auto Zone web link
