Least Shoddy Fuel Sending Unit?

Thread revival POW!
Hey guys, an update. So as it was recommended to me, I ended up purchasing the aftermarket sending unit from AM-Autoparts from ebay.

Fuel Gas Tank Sending Unit w/ 5/16" Line for Dodge Dart Plymouth Duster | eBay

And after running around and fueling the car, I can say that the sending unit is accurate through the whole range of the fuel gauge from full to empty. I never adjusted it either when I got it in the mail, I installed it as it came.

Now, that said... I would like to make an important note. My instrument cluster has had the voltage regulator replaced with a solid state one of my own construction. I'm sure everyone's seen the whole 7805 voltage regulator mod for the instrument cluster. Mopar Voltage Regulator Upgrade


Well, I looked at that mod and wondered why they were using a 5 volt regulator instead of a 6 volt regulator... seeing as it's 6 volt gauges. So I substituted a 7806 in place of the 7805 (last number indicating the voltage).

I wonder if that has anything to do with it? Could that be the solution to these aftermarket sending units? Mine is dead nuts, while tons of others are way off. Did those people do the mod, but with the 7805? Hmm, I say!

On a side note, the original sending unit failed because the float sank.
The 7805 regulators that I used to build the demon IVR would start cold at about 4.9V but as it warmed up output would climb as high as 5.4V .