In terms of making 600HP out of a Diesel, there are certainly plenty of Diesels that can make that kind of power. But the current crop of stock HD Diesel pickups are around 400 to 450 HP . They key for uphill towing is how long can you sustain the power. ICE vehicles are typically not setup with enough cooling to sustain max power output continuously without overheating.When I look at the big (6.4 L) diesels I see 250 - 300 hp engines that can be blown to 600 hp. This truck has about 1000 and 14 kN-m torque at the wheels (0.5 m wheels). I don't know much about trucks. Are their diesels that can do this?