0-90 ohm sending unit OR 73-10 ohm Gauge

I bought a package deal on a set of Autometer Ultra Lite gauges, and it came with the 0-90 ohm (GM) gauge. Ideally, I'd like to trade the gauge for the correct one, but will also buy the correct gauge or a 0-90 sending unit (Somebody used to sell them on here, but I haven't seen them in a while.)
Located in Escondido, CA 92027

Dave