There are lots of pushrod 5.0 Mustangs around making 400 hp/TQ but the powerband is well up the tach.. 3000+ rpm. I'm sure a modern 5.0 will improve on that TQ curve somewhat but it still won't match what a larger displacement motor produces. For comparison the old 5.0 and 5.8 truck motors made almost the exact same peak HP but the 5.8 was considerably stronger below 3000rpm... something that doesn't show up on the spec sheet. I am also looking forward to the release of the new 5.0.. it's about time the Stang got a worthy naturally aspirated motor, but im not convinced it will make a good truck motor.