Last summer, we posted a video pitting a stock 702-hp RAM TRX (35-inch tires) against the 1012-hp Hennessey MAMMOTH 1000 RAM TRX with a Stage 2 kit (37-inch tires). The Hennessey truck walked away from the stock TRX. To answer questions about the real-world effect of tire diameter and weight on acceleration and to show how well the Hennessey MAMMOTH 1000 RAM TRX performs against a stock RAM TRX, we staged the race again – but with both of our MAMMOTH variants. In the first race, we run a 1012-hp MAMMOTH 1000 RAM TRX fully optioned out with Hennessey’s Off-Road Stage 2 Kit (featuring 37-inch tires on custom 20-inch wheels, 2-inch level kit, LED lights, electronic side steps, and custom front and rear bumpers) against a factory-stock 702-hp RAM TRX. In the second race, we run a 1012-hp MAMMOTH 1000 RAM TRX with Hennessey’s Off-Road Stage 1 Kit (featuring 35-inch wheels, LED lights, and custom front and rear bumpers) against the factory-stock 702-hp RAM TRX. This “real-world scenario” comparison was conducted on an unprepped surface on a hot and humid summer day in sunny Sealy, Texas, at the Pennzoil Proving Ground. All trucks have a full tank of Shell V-Power Nitro+ Premium Gasoline (93 octane). We set the trucks to “Sport” mode (and turned traction control back on), held the brake, brought the engines to 1500 rpm, and then launched on the signal of a third person.