I went to a local junkyard and pulled an np261hd from an 02 silverado 3500 dually. It was a 32 spline unit off of a 4l80e. I brought it home earlier today and pulled my cadillac drive shafts and they fit into the np261hd, I pulled my transfer case out and there were no sensors anywhere on the unit. Its a locked awd t case and since the np261hd is a manual shift t case I went ahead and put my 6l80e extension housing on it and installed it into my cadillac. It is no longer awd and is now a manual shift 07 escalade esv, it had 2wd, 4low, and 4 hi. All I need is to mount the shifter and hook up the linkage. I put it in 2wd and drove it 40 miles and it worked out flawlessly, the factory driveshafts even fit.