I have been trying to locate a shifter for the allison at542 transmission. called 5 or 6 places and no one seems to have one. i know that they were used in isuzu, gmc,chevrolet and a few others. What is so special about this shifter? Everyone has the transmission, just no shifter for it. I was trying to find a stock one and modify it to use in my truck, but I may have to back up and punt. Wonder if it shares the same gate length as anything else? More importantly I wonder if anything else can be used in its place. I spoke with northwest fab about their cable shifters for the transfer case, and they are more than happy to make a shifter for me to use on the trasmission, but it won't have any detent or gates in it. That scares me a little in that if it was used there would be nothing to lock it into gear. Any bump or jar could knock it into another gear.......bad juju. The search continues snakeater