I put in a V1 which is the only one that would fit under my hatch. I called Monterey and got the recommended part but that was discontinued by Lewmar. The V1 was the replacement. Call Lewmar before buying rope/chain and double and triple check. The spec sheet with the installation guide had incorrect information as to chain and rope size. I almost bought the wrong stuff. And no one at Lewmar cared it was wrong. In fact double check everything. I don't think there are many windlass installs out West (I'm in Montana) I had a ton of problems with parts, getting the right stuff, etc.
Not sure if you've bought yet but West Marine matches internet pricing. I found a sweet price that they matched.
Email me if you have any issues. I may not be real helpful but I can look at my install if you have any issues. hopper dropper at g mail dot com No spaces obviously.