72 sattelite ralley cluster in a 73 charger

[texas charger 73]

I was recently given a 72 Ralley cluster out of a 72 Plymouth sattelite. Everything looks same except the second big gauge is a clock instead of fuel/oil. But the first small gauge does have oil/fuel. I also have full.harness from sattelite. What is the best   and simplest way to make this work.

[Nacho-RT74]

I think already replied you at FBBO LOL