With that done, we grabbed the wrenches and replaced the Trick Flow intake with a Mopar M1 4500 intake. Most people are familiar with the M1 4150 intakes, but Mopar also sells a line of M1 intakes with large plenums and a Dominator bolt pattern. The M1 4500 is an excellent race intake on the smaller 383- to 400-inch engines, but it struggled to feed our 470-inch engine. Peak torque picked up a bit, but peak power was only 687 hp at 6,300 rpm.