Digital Dash Double Pumper Sending Unit?

[mtocrs1]

Just purchased a used Quad Air double pumper set-up. I have a digital dash. What will I need to change to make this work correctly with my digital dash? What is the difference between the two sending units?

 

[Just a Six??]

I think the OHM's read differently but you could use your old one & just mod it the same or adapt the parts somehow??