The latest Diesel magazines seem to think that the DMAX is done and that a newer engine design from a different supplier may be an option (hope those are false rumors). I too am in the baby DMAX in front of a 4L85E or the upcoming 6L80E would be a very nice rig. Too bad GM doesn't get on the band wagon. I hate to rag on GM, I know they have their issues and regulations to meet, but throw me a frickin' bone and build it already.....pleeeease!
JP