2018 Kenworth Glider Gauge Adapt

provided Kenworth will provide a pin out for the body ECM and the required style/range of data required as input wiring in sensors would be less work. I personally wouldn't want to remove OEM gauges in the factory cluster and shoe horn in aftermarket or older model mechanical ones in a brand new truck.

oil temp and pyro would just be a thermal resistance. body ECM would send a voltage out to the sensors and it would come it back through the thermal resistor at a different value. literally 2 wires to each sender from the body ECM

 

Kenworth gauges are daisy chained from the body controller. Is there a spare gauge hole in the instrument cluster for an oil temp gauge? It is probably just a matter of installing the gauge and the lead. The dealer that sold you the glider should be able to contact the dealer support person and verify it will work.
As for a pyrometer I have not seen one in a long time and suspect they are not needed with the electronics controlling the fuel.