I knew i had another pic. This shows the clearance between the fan and pulley a little better. On the lower left side of the radiator is the electronic thermostat for the fan. It has a probe that pushes inbetween the radiator fins to detect water temp.
Thanks. I got it from a chunk of aluminum. Turned it on a lathe. Used an index head on a vert.mill to do the notches all the way around. Then drilled and tapped two holes on the bottom to attach the metal clip/thing, from the stock cap. Easy PS- gizmos are great. no FI, only SU's PPS- I also made that turnbuckle thing for the alt. Lathe, mill, Left + right hand taps, and 2 rod ends.