I saw the '77 R-600 at a truck show, with a for sale sign on it, but nobody was around. I took down the number and called it when I got home. Ended up leaving a message because nobody answered. After a couple of weeks I tried again, and again left a message. After a couple of more tries I gave up, never any return call. Two years later, one day at work, I got a phone call. I am the shop manager at a local school bus garage, it was one of those days, it was right about lunch time, and the phone rang,"This is -------- " right away my thought was "ugh, another salesman," and right at lunch break, I almost hung up! Well, the "salesman" went on to say that he had a Mack that was for sale and that I was one of 4 people who had left messages two years ago and he had made up his mind that he was really going to sell and that I was the first one that he called. Talk about fate! It had sat for the two years, outside not run. I went to look at it. It still looked pretty good but the batterries were stone dead. I made an offer but he really didn't like what I offered. He promised to put new batteries in it if I would listen to it run and make another offer. Meanwhile I called a friend who knows Macks real well, told him about it, seems as though he knew the truck from the day it was bought. "If you don't buy it I will" was his reaction. Well, I went back, we got it running, and I fell in love. Well even though I bought it for $2000.00 more than I originally offered, I have been offered more than $3000.00 more than I paid for it. I think I'll keep it around for awhile.......I wouldn't sell my old family dog either. He's priceless, too