That is some combination ! Is everybody assuming that the trans is a powerglide or is this a mopar one off trans ? Best reason I can think of for offering the 2 speed is to make it easier to hook with small tires ( 9 in.) ! Would it be a retroactive trans to the 2009- 2010 Drag Paks ? Cannot even begin to ponder the the ratings on this motor ! GONNA BE AN INTERESTING WINTER .