I HAVE FOUND THE GAUGES I WANT THANKS TO SMADY . BUT MY QUESTION IS, I HAVE A 120 SPEEDO AND THE ONE I WANT IS A 140, HOW DO I MAKE IT WORK?? DO I JUST CHANGE THE SPEEDO GEAR OR WHAT .... THANKS FOR ANY FEED BACK...

 

first ya turn the cap locks off, ouch. as long as the gauge cluster came from an engine with the same amount of cylenders you got and it has the same type of speedo sender you are good

 

How's about swapping from a mechanical guage to the electronic ones?