OK Guys.... All you have to do is explain to me why when you order a Ruperts fuel system it comes with a Enderle belt drive pump and when you order a Bolaws fuel system it comes with a Bolaws belt drive pump with a built in REGULATOR and no return line needed! They both can make thier carbs work with electric pumps but when you ask them what is best they will tell you a mechanical pump. I am a bracket racer who races 4 to 6 races a month and all i am concerned with is what is most consistant, not about the cost.