Originally Posted by Ryan @ RJM

Rob, you're very welcome and yes that is correct on the CMC odering. The main change is the Rev1/2 units have a custom clevis that was only ever offered with OE metric threading while the Tilton uses an imperial fine thread. With Rev3 versions I can simply provide a Tilton thread HD Clevis, with Rev1/2 to accommodate the oe threaded clevis original to those kits I have to change out the Tilton standard rod for a customized metric threaded one. Hence the multiple ordering options