Well I got the WD hitch for 600/6000 lb. It was looking good. Took off on Dec. 13 from Milwaukee got near the Il border and blew the transmission. Fortunately, I had signed up for Good Sam roadside and they my RVan onto the truck, hooked up the trailer to a hitch and took me back to my door. It cost an extra $100 to my door rather than dropping me at the closest campground which in this case was the closest Walmart. Well worth the money. The transmission places are so busy that all they could say is they would really try to get my RVan back to me before Christmas. Sheesh.