fuel cell

I have a fuel cell on the way, and i was just wondering, for one what is the ohm rating for the factory fuel gauge? The cell has a 0 to 90 ohm chevy gauge in it so i have a feeling i will be installing a small fuel gauge. Will the stock pump be enough to pull the fuel from the rear of the bed? i can get cheap universal pumps made for 6 cylinders at work that would prob work good if not and the tank has three lines on it now, one is feed , one is return and idk what the other is, but do i need to keep all three to the cell? idk if this is the right section but i guess it will work since its going in the bed hahahaa. Thanks

here this might help a lil.

If anything it will just read backwords.

Did you ever turn your switch around to see if the gauge would read the correct way with the GM sending unit?

no i never got that far. i ended up trading the truck off b4 i got the cell in?

yeah it does read complelty backwards but ah its all good, im not getting any fuel now tho, my tiny outboard pump isnt enough to pull the fuel that far so ima have to try to universal pump that i sell at advance lol