Originally Posted by F350-6

Because Ford got all excited about introducing the new Super Duty. They rolled out the 1999 model trucks in 1998. Kind of the same way they rolled out the 2008 in 2007, and they're already selling the 2011 trucks now in 2010. The difference in the 99 and the newer roll outs is there are 2007 and 2010 trucks out there. On the newer stuff it was a big motor change made with the roll out (due to EPA regulations). On the 99, it was a few motor tweaks with a major body overhaul.