I have a question about the Allison transmissions I have a stage 5 Allison 1000 weather a stage 5 3des revmax torque converter from my 2002 Chevy now I have boughten a 2007.5 GMC 2500 HD with the six-speed I have heard that you can change the bellhousing valve body and the tell adapter to the transfer case and that will take my 5-speed and make it a 6-speed and be able to put it in the 07.5 does anybody know anything about that if it is true or not