fuel sending unit with duel return lines?
 

Does anyone make one?

What are you even asking?

I don't mean to sound abrupt but I don't understand your question.

A fuel sending unit has a ground lug and an output terminal (for variable resitance thru the ground) for sensing the fuel level.

Why would it have one return line, much less dual ones?

MC

Some diesel and fuel injection engines use a return line back to the tank, going through the fuel sending unit may help make some installations a bit easier.

I haven't seen a marine duel return line, just a single like this,

http://www.amazon.com/Moeller-Marine.../dp/B000MTI15U

to help with the massive vapor lock problem we've been having
Everyone has been telling me to make a return back to the tank and to keep from
Drilling the tank someone told me to find a fuel sending unit with a return line.
I didn't kniw if they made one with duel return lines or not but I bet I could drill an extra one with a few fittings... .
Thanks lakematdude! I will order one

CP has a fitting where you can cut your fill hose to your tank and install your return lines.