Cummins Driver THE Cummins Driver May 18, 2008 #1 My buddy has a 6 speed 6.7 with a dual disc clutch waiting for it, and a 4 inch DPF delete on it just waiting for some power. What is the best stack for the 6.7? Eric
My buddy has a 6 speed 6.7 with a dual disc clutch waiting for it, and a 4 inch DPF delete on it just waiting for some power. What is the best stack for the 6.7? Eric