Brian-
You should be ok if you get an oil temp gauge kit now. In the beginning, the MOCO had at least 2 and maybe 3 different gauge styles for our bikes. My original gauge kit came with a gauge that did not match very well and worked for about a month and quit. With help from this board (GRC and others), it was diagnosed as a bad gauge. The new gauge has been in for several months and matches the other qauges exactly EXCEPT there is not a stop for the hand at the bottom LH of the gauge when engine is cold or ignition off. Doesn't bother me at all. Up to 180 degrees, the gauge is off 15-20 degrees compared to my digital gauge (low). Once the thermostat opens at 180 and oil goes thru the oil cooler, the readings are about 5 degrees off from 180 and up. I would do it again.