I have a '83 Supreme Brougham, was a diesel car, now it has a '78 Delta 88 350 motor. I found a Hurst speedo-tach-gauges set and am wondering what it would take to put this in my car? The gauge set has a spot for the speedo, a wiring harness plug coming out of the back. I also noticed it doesn't have a gear indicator on it since the Hurts is a floor shift. I know I'll need new sending units for the water, oil.