I finally got some testing on mine done yesterday with the new water temp gauge and the new motor. Mine has a taller radiator than standard (bout 2"), the laragest hose dia. I could use, thermo fan which at the moment runs constantly and is on the front of the radiator (no aircon) and a forward facing patrol bonnet scoop.
Around town and just cruising up to 80km/hr sits around 82degrees, revving it out and cruising at 4500rpm in 3rd (80km/hr) it creeped up to and then peaked at 90degrees....then highway 100-120km/hr it dropped down to 80degrees.....
So I'm pretty happy with it so far....have just got to setup the thermo fan to only come on when needed, and it should be right. Is there any news on the temp gauage/controller you were getting in sideshow?