Well in late April/ early May 2008 I just had received my 1970 Chevrolet C/10 long box as an early high school graduation gift. I was trying to find more info about it or trucks like it and every time I tried looking up info online, I kept being directed to this site so, after deciding to give it a look through I'm sure glad I did. And they don't just cover the 67-72 C/10's here pretty much if your truck was a GM product or, if your equipment has a GM (Detroit) Diesel engine you may be able to find the info or help your looking for here