My home is a 1979 Mack RS600L valueliner, with a custom built Callen Camper body. The story behind the creation of this amazing motor-home is that the then owner of Callen Campers, wanted a camper that would last forever, be strong enough for their camper to be built on it, and be a proven truck. His brother, then driving in San Diego for a Cement company, suggested they use a truck the same as his work truck - it went forever, never broke down and would pull a house down. He drove a Mack RS600L Cement truck, so Mackie was bought from E-W Equipment Company, Federal Blvd, San Diego, in July of 1978. The truck was specifically for motor-home use, never to be commercial, so came with a 10,500 front axle, for easier ride, and single rear axle with 3.70:1 ratio. Callen Campers took delivery of it in August, '78, and started the camper build that month. Unfortunately I don't know much else of it's creation, but I do know that Bob Callen, the owner of the company, used it regularly for the next twenty years, traveling from San Diego to Alaska, the east coast, Mexico, Florida, and about everywhere between. When Bob Callen died, his brother got the truck, but already had a Callen built Peterbilt camper, so gave over the Mack to his son, Paul, who used it as home base, whilst he built his own house in Bend, Oregon. Some time in 2007, Paul decided to sell Mackie and put the details on the internet. In 2009, I saw the details, and the Mack was still unsold, so I made arrangements to buy it, in March of 2009, but. . . In March of 2009, the economy went bust, and so did I, so the money I was to buy Mackie with never arrived. Almost heart broken (I am, after all, Mack crazy) I sent a sad message to Paul that I could not buy it after all. For a year, I looked at the pictures, and just imagined I had it, until February 2010, when I received an email from Paul, asking if I still wanted the Mack. My pension stock had improved, not much, but some, so I had the money, due on March the first. We exchanged emails, chatted on the phone, and I reckon Paul thought I must a real nutter, but he still sold me the Mack, on February 27th, (my money arrived early - we had driven over to Bend, from Indiana where we were staying in a shack and trailer, at the beginning of that week, and were drooling over the truck for a few days before the money arrived) On February 28th, a Sunday, we took possession of the Truck, and I could not be happier. It is an awesome machine, that effortlessly roared up Cow Hill on the 93 out of Bend, at 65mph, in overdrive. He weighs in at 22680, with no water (holds 200 galls), no waste, (holds a lot), and not much fuel. Fill the water and the fuel, (2 110 gallon tanks) and he weighs 25,880 or there about. The gross on the vehicle is 30,000# so there is room for us,(old guy, younger wife, younger chihuahua), and sufficient junk to keep her happy, (the wife, not the dog) There is a 30,000# pintle hitch on the back, that looks good, but doesn't attach to our Jeep, so we put a modified F350 receiver hitch onto the frame... It had to be narrowed 6 inches, to fit - a Ford F350 frame, is 6 inches wider than a Mack's.. hows about that? With this hitch we tow around a jeep JK - not my favorite Jeep model, I prefer a TJ, but they don't make 'em any more. So, that brings us up to date with the history of the Mack, except that the twin beds aren't the way we like to sleep, and the sofa was rather old, (like everything else) and bowed to the floor. That was donated to a welder friend in PT Hadlock, WA, when we were up there, getting things done, like making the fridge run on 12v, when moving, repairing the furnace, water heater, adding a back up camera, so we could actually see the jeep was still attached, Traction tires - it came with steers all round, and I am an ex over the road flatbed driver, so traction tires are a must. There are a few things not yet working, but maybe this forum will help me on those things. I have a couple of pictures to share: The tiny wife, and big radiator grille If anyone has any interest, I can show more pictures.. I take a lot of this beautiful truck.