For 2008, Dodge Ram heavy-duty line gets a new model, the SXT which slots between the ST and SLT lines. Also updated are woodgrain trim (dark maple burl), electric-switch 4WD on SLT and higher trim, tire pressure monitors on single-rear wheel models, and a slight increase in maximum weight for the largest models.

The Dodge Ram Mega Cab was launched as a 2006 model. Mega Cab is built on the Heavy Duty chassis and comes fitted with the Hemi engine. The extra-large Mega cab was created by re-proportioning the relationship between cab and bed on a long wheelbase truck, adding 20 inches to the cab and shortening the bed to 6 feet, three inches.

The result is acres of cab space, with six seats and plenty of head, shoulder, leg and hip room. The Mega Cab is aptly named. The back seats are roomy and comfortable with reclining seatbacks, separate rear heating and air conditioning outlets, reading lights and a center armrest with cup holders, and available DVD entertainment. there's space behind the back seats for cargo. Folding down the back seats reveals a huge cargo area (more than 70 cubic feet) with a flat load floor. The rear doors open big and wide, making it easy to load stuff inside. Covered bins are provided back there for storing gear and smaller items, and hooks are provided for hanging things.

The Ram Mega Cab rides and drives like a heavy duty pickup, regardless of the 1500, 2500, or 3500 rating, and it doesn't make sense unless you're towing heavy loads or have a big work crew.

We found the Dodge Ram Cummins turbo diesel quiet, powerful and responsive. The exhaust brake provides engine braking down long highway grades, thereby leaving the brakes cool, fade-free, and ready for stopping. The diesel's power and fuel economy make it an excellent choice for owners who tow heavy trailers long distances.

The Ram Heavy Duty models are equally at home serving solo contractors, landscape crews or families with heavy toys, and everyone in between. Despite a reputation for being the most truck-like, the heavy-duty Rams are civilized and make trucking enjoyable.