Have been pulling trailers lately with my 7.3L '97 F250 and the Sport mirrors may be cool with power and what not... but they are useless when it comes to towing. Although I had some trouble with removing bolts off the old mirrors as another review mentioned, the install of the Swing Lock was very easy with all the new hardware... Minus the cringe of drilling holes into the door of course. lol. My original gaskets and the new gaskets fit perfectly. Went with a larger set of mirrors from Dorman (955-1384) off Amazon and boy can I see behind me now. These guys make great products to help restore/upgrade our old OBS machines!!