atomic4 or indigo

Indigo Electronics is advertising a new thermostat kit which uses standard auto thermostats. Has anybody tried this? http://www.atomic4.com/thermostat.htm I have used their "thermostatic mixing valve" and have not been impressed. My A4 is FWC. I would be interested in what others are...

Pulled Penguin this morning for a bottom job and yard bent the prop shaft. (Good beginning) Got me thinking about whether or not the three bladed prop from Indigo should replace the two bladed stock unit. The yard has to pull it off so what say you? Any advice appreciated John