Hello. My name is Wayne and I just ordered a new 2012 2500 HD LTZ Extended Cab Standard Box 4X4 Duramax Allison Loaded and due to arrive early May. Been looking for a bed tool box to fit behind the cab and not interfere with the bed rail protectors or hard Tri-Folding Tonneau cover. Any suggestions on web sites to research? Looking forward to getting this truck as haven't owned one for about 10 years. Currently have a 2002 LTZ Trailblazer which is in excellant condition despite it's 140K miles.