302 "r" series intake Ford: 5.0L, 2,500 to 7,200 rpm range, EFI R-Series intake manifold
This manifold is designed by Trick Flow and provides superior low-end torque and excellent higher rpm horsepower. The runner length and cross sectional taper make the base the highest flowing street design currently available. The straightened runners also prevent the front cylinders from being starved for air, a common problem on EFI Fords. It has a rpm range of 2,500-7,200.