I'll add that the power wagon winch is a front mount winch which means the winching force is parallel to the mount. The winching force is perpendicular to the mount on bottom mount winches. This is significant because the force on the mount is increased as the distance increases between the rope and the mount. Spooling the rope off the top of the drum on a bottom mount winch could surpass the strength of the casting or the bolts at the mount.
-Andy
Excellent points Andy!