I keep coming across people in different threads saying the 8.1L is no longer available. I also keep seeing it as available in the 2007 Chev and GMC websites and brochures in 2500HD and up vehicles. It also shows in Trailer Life's 2007 Tow Ratings tables, which, I assume, comes from information manufacturers provide. I plan on buying an 8.1 2500HD gasser later on this year and am real curious what has led these people to believe the 8.1 is gone. Is it rumor or is there some definitive information source somewhere saying this?