I wouldn't worry so much about the exact poundage. It's really just a first wrap layer straight line pull in an absolute best case scenario. A 700 lb atv in deep mud has a lot of suction forces working against it. Which loads the winch differently from a steep embankment pull. If it has a Yamaha sticker on it, I'd be confident in knowing in could handle just about anything your Grizz could throw at it. Better yet, give it a try yourself if you can find a place, and see how it does.
What is a rotating switch? If you look on Warn web site for replacement parts for the older winches the only difference between the 2000 & 2500 is the gauge of the electric cable.
Look farther back or they have discontinued the parts. The old 2000 lbs winch (called A2000) did not have the large 2 way contactor. They used a high amperage switch that rotated 2 different way for operating IN and OUT. They also used a regular starter motor relay with an on/off switch to turn the winch off. Most never installed this relay because it was trouble. Additionally, those old rotating switches were trouble. They were not sealed and dirt would get into the contacts. And then the contacts would burn up.
