lantana, I may have that answer for you soon...I have a feeler out on the tranny to the engineer buddy I spoke about. He knows other engineers in the tranny business...soon as he gets back to me, I will let you know what I have found out about the mods we can do. Art, my buddy, worked for Allison transmission for 30 yrs, retired, now does consulting work for Jasper transmissions, but he is talking to someone about the 722.6 who does the design and build on them....Art has several patents of his own, but mostly on the MIAI Abrams tank...now there's a transmission...