The RAM TRX is an epic truck where customers can get 702 horsepower and 650 lb-ft of torque on tap from their local Stellantis dealer. Of course, most buyers will be more than satisfied with this level of performance. Still, John Hennessey isn’t a typical customer, which is why Hennessey Performance Engineering created the Hennessey Mammoth 1000. As is expected when dealing with the tuner Texans at HPE, the Mammoth 1000 cranks the Ram 1500 TRX up to 11. Yet somehow, they’ve managed to find a way to make the truck with over 1,000 ponies and 969 lb-ft of torque even more fantastic with the Henne…