I'm putting in the 1985 Merkur XR4ti 2.3 Turbo engine in my 1976 Ford Pinto wagon. I'm using Sunpro electrical gauges and they have their own sending units. The question is do I use the sending units that came with the gauges and use the wiring harness from the Merkur ? Or do I just use the sending units that are on the engine and run another set of wiring ?