I currently have a 2.8 in my Comanche with the older cluster, I would like to switch to the renix cluster; I have found one with the similar plugs as mine. Would anyone be able to tell me what sending units I would need? Also i’m Lost on the tachometer. Since it’s 6cyl, would I still need to mess with the tach or could I leave it how it is? I’m hoping I can just splice the two harnesses with little problem and just change sending units. I have the old ones from another 2.8 that came with a different cluster that just had the lights.