I am in the process of swapping a Chevrolet 305 in my Bonneville. I want to switch the idiot lights to factory gauges. I was lucky enough to find a working gauge set out of a GP at the junkyard. I looked up the sending units on Rock Auto and the temp unit is 5 or 6 dollars. Now when I look up the oil sender , it is 56.00. I looked at a Bonneville and Grand Prix with 305’s and they list the same one. I then looked up Cutlass, Malibu, Monte Carlo and El Camino. With a 305 and gauges, they all showed the same sender( different part than the Pontiacs) for 26.00. Can I just get that one or are the Pontiac gauges different than the Olds and Chevy gauges? Any help is appreciated..timo22