Does anyone know the AN fitting size for the GTM Setrab Rotrex Cooler?
 

I am considering adding a SPAL fan to add additional cooling on the Setrab Rotrex cooler for the GTM Stage 1 SC kit. Does anyone know the AN fitting size? I was planning on adding an AN thermal switch assembly to turn the fan on and off.

Picture of the Setrab Rotrex Cooler:
http://i1120.photobucket.com/albums/...ps21efc0e6.jpg

Picture of the AN thermal switch assembly I was going to use:
http://i1120.photobucket.com/albums/...ps1549563e.jpg