1967-72 Chevy / GMC Truck Tachometer and Vacuum Gauge Conversion Master Cylinders and Kits 1947-55 Chevy GMC 1st Series 3100 3200 3600 3800 Truck 75" bolt pattern and came

75" bolt pattern and came on the following vehicles:

Buick Grand National and Oldsmobile Cutlass

For those looking to drop your truck over 5"

CNC Cut & TIG Welded Bracketry

These A frames are designed for the performance enthusiast

1967-72 Chevy / GMC Truck Tachometer and Vacuum Gauge Conversion Master Cylinders and Kits 1947-55 Chevy GMC 1st Series 3100 3200 3600 3800 Truck 75" bolt pattern and cameUpgrade your dash with our 1967 72 Chevy GMC Truck OEM Style Tach and a Vacuum gauge Conversion. Available with a factory 5000 rpm tach or you can upgrade to a 8000 rpm for just a few extra dollars. Don't forget to replace your dash bezel at the same time (sold seprately)