My new fuel gauge came in so here's the comparison:
On the old gauge:
Post to post it measured 41.8 ohms, and the current limiting resistor measured 24.8 ohms respectfully.
On the new gauge:
Post to post it measured 38.5 ohms, and the current limiting resistor measured 21.0 ohms respectfully.
Before removing the old gauge from the truck it displayed a fuel level just below 1/2 a tank (1/16-1/8" to the left of the 1/2 mark) are u tracking.
After I installed the new gauge it was right on 1/2 a tank. The problem i was having before changing the gauge was the always reading too low. Only time will tell once I run to town and top it off. For now it appears as if the new gauge just might be more accurate (I hope its right on).