This is what wikipedia shows as the hottest 6.5
Power / Torque (highest): 215 hp (160 kW) @ 3,200 rpm / 440 lb·ft (597 N·m) @ 1,800 rpm
Not knowing exactly what the drivetrain loss is I can't tell you but they typically use 72% (mustang dynos read lower than most chassis dynos) on manual cars. So that would be 208hp and 486ftlbs. I would guess the truck would be higher loss with the sm465, 205 and 70. I know mine peaks tq at 2100 rpm and my hp is at 2800-2950 rpm. I will tell you my Governor isn't set right because it will run right past 4k.