I would just try the shock before being concerned about replacing it. I know the RS Bar has a bad review rate, but people who I know who ride the shock are pretty satisfied with it. I like mine. A buddy on his Rocky Mountain likes his too.
Hey Own154, don't you have a KHS xc504 frame? If so, you can just put that shock with the rebound adjuster onto the Warrior. The KHS use a 7.5x2.0 shock, which may fit the Warrior.