To help select the correct fuel system you need to know the max horsepower level your build is designed to achieve. While the L1 Kit is good up to 800 horsepower maximum, the more advanced L2, L3 and L4 kits are capable of supporting 1600HP on gas or more. The difference between L2, L3 nd L4 is just line routing in reference to the regulator and fuel rails:
Dual or Triple Pump option is all about your required fuel volume and pump demand. You need more than enough pump but having way too much pump produces unnecessary heat as well. Feel free to contact us for our recommendation.