I understand that a electric pump can work fine on the street. The problem I see with performance pumps is that the suction line usually is not big enough expecially with a stock tank. Lot's of guys struggle with electric fuel pumps because of the suction side is not big enough for all conditions.imo

Yes the key is circulation to keep the fuel cooler.

Yup spacers can and do help alot, but my point is. Properly setup and tuned they are not needed, imo.