I'm from Pa. Near Valley Forge, bought my first Duramax it's a 2001 2500HD ECLB 4x4 in 2004. It currently has 365,000 and still strong. We also have a 2002 2500HD ECLB 4x4, 2003 topkick 6.6 4500 stake body dump, 2004 1/2 LLY 3500 4x4 stake body dump truck, 2002 2500HD ECLB 4x4 all have Allison 5spd. All the pickup trucks have the edge on them.