My truck has 96,000 miles with the "AE ratio (6.7) 6 speed stick. My truck is a December 21 2006 built, 2007, 5.9 and that is why it came with the 6.7 ratio, G-56. I just had my right knee replaced and my left is probably a year or two from having it replaced. I DON'T want a 48RE but want a 6 speed auto with the two over drive ratios, one for towing and one for cruising empty. I have looked to see if there is a stand alone transmission control that will interface with the ECM on my 5.9. I would like the Aisin but have heard that there is a conversion using the 2011 and later Allison 1000 6 speed. I would sell my G-56 set-up to off set the conversion. Anyone know who does the conversions or sells a kit?