I just installed a Dynotech input shaft and GM Racing 1" chain setup in a trans a few weeks back. The gears come in a box with GM Racing right on it and a part number but its not going to do any good at the dealer and I dont know anyone aside Dynotech or W-body Store that sells them. I have heard of some issues with the reluctor wheel from Mike at W-body store but the set I recieved was modified and ready to install and fitment was just fine. They are brand new forged gears and a 1" wide chain which is similar to the 7/8" chain just a few links wider, but it is the same rocker type HY-VO style chain construction.
