You could install another pick up in the tank(seperate
location) and use the currant line as a return.
I have made up pick ups out of the stock flange when
I worked in the fuel lab, either 3/8 or 1/2 but the
1/2 gets tight. Bend up the line to look like the
origanal and solder it in, mount the resistor card
on the line so its in the proper location for full
sweep(3/8" off of the bottom to the bottom of the float)
3/8 should be fine unless you have serious HP
EDIT
I believe Year One has the 3/8" pick up but not sure
for your year