Magnum engines where installed in trucks, They have a 500 cfm throttle body. Not exactly what most would call "performance" motor. Windage trays only real advantage is at higher rpm's and when the oil gets pushed back into the crank. For a 1/4 mile vehicle yes but not a daily driver for a 4000 pound(at minimum) truck. And the trucks had larger pans back when the LA's where still being made so the oil was farther away from the crank.