Agree.The magnum is more efficient as it should be with more modern components. Magnums get a bad rep.with fuel mileage because they were originally in heavy trucks/vans behind a lousy 4spd. automatic for the most part. Local club member swapped 318 magnum & 5spd. from Dakota along with PCM (modified for his application) into his 72 dart and pulls down 23/24mpg on HWY with 3.23 rear.