Unfortunately not. The 5.7L was certified to that the 9000 GVWR. So, even if you did go through the effort of researching and changing any and all effected components (suspension, breaking, cooling, etc.) that truck is only legally allowed to have a 9000 lb GVWR because that's what the tailpipe emissions were certified to. We would have to re-cert the package before could print a new cert label for the door jamb.
