Banks isn't the only one....CFM+ has a kit also that has the larger IC pipe to go with the large intake elbow. I have the CFM+ kit and have used the banks kit also(still have it) and personally i think the CFM+ one is better cause it is already drilled and taped for boost fittings and for nitrous and/or water injection nozzles.Banks has the best. They use a bigger boost tube. The bigger tube allows them to use a bigger elbow. Others use the stock size tube so theirs is smaller.