I ran across a 2001 Chevy with the duramax and a 6 sped last night. It is 4x4 with a flat bed. How is an 01, is there anything to watch out for on the early dmax. How is the 6 speed, I have always wanted my next truck to be an auto but, at least this 6 speed has reverse where it should be. what is one worth that is in good condition with 100,000 miles. Thanks Jon