Engine Pics, Thermal Switch Question

[SirNik84]

Well I haven't posted pics of my engine in a while, and I had to repair an oil leak tonight so I cleaned up the engine and took some pics for you all.

I moved the battery to the truck to better counter balance my fat rear-end in the drivers seat, and to open up space for the air filter.







My next step is to get an electric fan for the back of the intercooler to help pull air through it since its in a less the ideal location.

Any ideas for a thermal switch that could control when the intercooler fan would come on? I'm thinking a switch set between 100 and 120 degrees F.