I have a 67 1/2 ton long wheelbase that I gave $100 for back in 1980. It needed an engine, and I had a 307 that I put in it. I figured that if it worked I would use it as a daily driver and if not I would make a trailer out of it. I drove it every day to work and wore out the 307. I had not had a good 6 cylinder truck for a long time, and found a 67 250 that I gave $25 for. It is now in it and I still use the truck, but not every day. It just doesn't seem to wear out. It as been a great daily driver.
Jim