Bought my second slick about 2006. Daily driver for a couple of years and then decided to take it apart to fix the rust. It had 66,000 miles on it when I bought it, with about 10,000 on a replacement engine. The guy I bout it from told me the 300 six came from an air compressor that was at his work, they had rebuilt it and then never put it back in service.
Here's a pic from Day one.
Here's one from tear down.
Sandblasted the bottom of the cab and frame.
That was in 2009, it has sat since. Waiting on time and money.