Need New Fuel Sending Unit Recommendations

I have been scanning through the archives about fuel sending units and how several of the reproduction ones out there aren't the correct ohm rating and don't read correctly. However, I didn't see where anyone had actually found a source or brand for a good unit that DOES read correctly. Before I go and purchase a new 3/8" sender, I was hoping someone could tell me that brand/source of your correct operating unit. I may modify this new unit for an in-tank electric pump to help eliminate my fuel boiling/lean running situation I'm getting with my high flow mechanical fuel pump and 45 year old original fuel line. Of course any additional information would be greatly appreciated.