[Steve Jones]

JT,

I'm using a Flexilite Black Magic and what I like about it is that the thermostat bulb and capillary tube are inclosed by the radiator shroud. The shroud holds the bulb up against the surface of the radiator, so there's no plumbing to do. I don't think where the temperature sensor is located is all that important on an adjustable system. In other words, you don't really care what the actual temperature is on the surface of the radiator or care about the fact that it may not be the exact same temperature as the coolant in the radiator (at the top or at the bottom etc.). All you need to do is warm up the engine till it gets to the temperature (according to the temp gage) where you want the fan to come on, then slowly turn the thermostat control until the fan comes on....your set. The Black Magic also has an overide input so you can toggle switch the fan on if you wish.
Hope this helps,
Steve