[PxTx]

I've checked a 1977 Motion catalog I had handy to verify this, the Motion gauges offered in the catalog were all Sun ones. No others were listed. Oil Pressure, Fuel Pressure, and Vacuum were mechanical. the Water temp, Amps and Volts were electric. Other 2" Suns were offered, but I think they were not the ones we were concerned with.

Hope that helps some.

Paul Tholey