OK...just to update on this subject. Someone here mentioned that the use of voltage reducers may make your gauge read full and empty but be very "off" for the rest. I can confirm this now that I have been driving for a little bit and find that the empty is a bit off as well.

dont ask how I now know...
So I took out the original sender in my 46 tank ( I am not sure if it is original or its origins) and modified the one that came with my dolphin gauges so I would actually fit in the tank and the arm would work properly. I am now happy to say that I have an accurate working fuel gauge.
Some of you that understand the reducers and ohms etc may be able to get the gauges to read close enough for comfort but I prefer not to use the gas can again.
