Lat I heard on the 2003, which came from sources at DC Jeep / Truck Engineering Center here in Detroit, was a 305hp / 550 ft. lb common rail injected with pilot injection QUIET CUMMINS. Quiet like a dura max. Originally was suppossed to have an Allison auto, but unsure on that now. One of my sources drove a 2003 4X4 3/4 ton with the new HEMI 5. 7 Litre gasser. he says it makes his 5. 9 litre 360 feel like a V6. He did say the body is the same as the 2002 1/2 tons, but the 3/4 ton has the current style solid front axle, NOT an independant. There are several photos of the 2002 1/2 ton on Fritz's web page. The 4 door is not quite a full size 4 door like a Ford or Chevy, but it is suppossed to offer definantly more room than the current quad cab.
Hope it helps.
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2000 QC SHORT BED 4X4, 24 VALVE W/ 275 HP INJECTORS, 3. 54 GEARS W/ POSI, AUTO, BLACK WITH EVERYTHING EXCEPT LEATHER,285/75R16 KELLY SAFARI AWR, RAIDER NOMAD CAB HIGH CAP,FACTORY RAZ STEREO W/ STEERING WHEEL CONTROLS, KENWOOD 848 AMP, KENWOOD EXCELON 6X9 IN DOORS AND KENWOOD EXCELON 6IN. ROUND DUAL-MAGS IN REAR DOORS, MTX FACTORY FIT BOX W/ 2-10"SUBS UNDER REAR SEAT
2001 ARCTIC CAT ZR800 TWIN LE BLACK...