Choose the winch, in fact, the most important thing is to choose their own car. I have a friend who is the same car as you, and Harvard M4 has a weight of about 1100 kilograms, or about 2400 pounds. Like my friend, it's a ATW4500 pound T-MAX winch that's more than enough for a light car like yours.
. ATW4500, for your Harvard, the line speed should be 3 meters per minute, which I experimented with my friends. The most troublesome thing about installing a winch is the weight problem. The winch is too heavy. It affects the driving of the car. It also uses gas. The rope weight of the ATW4500 rope is only 11.8KG, which is very satisfying.