Aftermarket gauges
If you can hook up the summits and the factory ones, I'd recommend doing that and leaving it. The summit oil pressure and water temp are mechanical gages and probably a hell of a lot more accurate than stock. Find a mid 70s dodge ram van with V8 for a nice factoryTee adaptor for your oil pressure. Use the tubing and electric sender on the tee. I recommend getting copper tube for the mech oil pressure if you intend to keep it hooked up. I have the same set of summit gages. Plan on keeping em hooked up when I get to that point. Dual redundancy especially with the 2 most important gages. Oil pressure and water temp. If you are running a stock mopar mid 70s radiator there should be a threaded hole in the top tank for an emissions device, use that spot for your aftermarket gages water temp probe
If you can hook up the summits and the factory ones, I'd recommend doing that and leaving it. The summit oil pressure and water temp are mechanical gages and probably a hell of a lot more accurate than stock. Find a mid 70s dodge ram van with V8 for a nice factoryTee adaptor for your oil pressure. Use the tubing and electric sender on the tee. I recommend getting copper tube for the mech oil pressure if you intend to keep it hooked up. I have the same set of summit gages. Plan on keeping em hooked up when I get to that point. Dual redundancy especially with the 2 most important gages. Oil pressure and water temp. If you are running a stock mopar mid 70s radiator there should be a threaded hole in the top tank for an emissions device, use that spot for your aftermarket gages water temp probe