I have owned 2 of these in the past. Bought the first one in 1977 for a Chevy 4 wheeler, worked fine, liked the hidden look behind license plate. Sold it with the truck. Bought another Sidewinder in 1978 and put in on a Chev Blazer, worked just fine for me, used it many times. They are slow compared to others, had several Jeeps over the years and always put Ramsey's on them, didn't care it the Ramsey's were hidden or not on a Jeep.
If you want to get rid of the Hickey Sidewinder, let me know. Also what condition is it in, photo would be nice, have all the parts, etc.
Hope I answered a question for you.