This is an age old problem. Ohmage problem with fuel sender, compatibility problems with the other senders. You can use modern, conventional gauges in a "hidden location" and leave the orig in place. I would not trust old gauges with a new engine. Esp OIL press. But many do that. The modern update, vintage looking, speedo and gauge cluster is $475. You obviously have converted to 12V? What are you doing about that conversion regarding gauges?
