Saw a hmmwv on steroids at a demo yesterday. proto type big boy - GVW was up to 15,000 lbs. engine was electronic 6.5, had a huge front-mount IC (all HX's were front mount) and had a clean upper intake (penninsular). 255hp, 525 lb-ft. Used the 6.5 for commonality, engineers wanted to re-engine with CAT or similar beyond demval.