For several years I ran a simple deadhead system on my cuda using the little Aeromotive street rod 11203 pump and a -8 feed line. Ran 9.50s at 140+ mph at 3800 lbs. pump gas and all motor.

I upgraded to the Aeromotive A1000 pump using a -10 feed and -8 return. It ran no faster, but I didn't expect it to. I went w/ the return system to help vapor lock issues on the street...and it helped greatly.
Still using the same system feeding both the motor and the nitrous system well into the 8 sec range.

Using a stock tank w/ a welded on sump. Two -10 feed lines Y'd at the pre-pump filter inlet. The return is plumbed into the stock pickup tube.