I too thought they (the w tray itself) were the same but that they included some very thick washers in the kit to go under those 4 bolts to space them out further so it'd end up clearing the 360 stroke???. I'd rather ditch the washers (for the most main cap bolt thread engagement) and grab some hardware store spacers/longer bolts that screw into the bolt heads to space the tray out that way. But back to the orig Q.