I have read where some have opened up the Saginaw fitting where the return line connects at the front drivers side frame. It didn't work for me with the racetronix pump on the white t.
Spoke with nick macale, and he has been able to use the pump by replacing just the return line from the regulator to the frame with a hose. I can't remember what size hose he said he used. I've slept since talking with him.
I really liked the racetronix sender/line kit and will probably use that again. I have no need for the DW300 at the moment but I have plans and found a great deal on it.