Carey, Classic chevy truck parts, Jim Carter, The Truck Shop...will all have the gauge with the tube and sensor attached. It runs about 50-70 dollars. The pain is getting under the dash to remove the gauge cluster and replacing it..without breaking the oil pressure line or disconnecting any wires or putting a crink in your neck. They will also carry the adaptor for the sender to screw into the head if you need that.
Good Luck
