One of the smaller ones works on the exhaust header studs. Ask me how I know...............You can buy the entire set of "never use again" sockets from harbor freight for 15 bucks if I remember correctly
Got pictures?I thought that I just used a 12-point socket. I mounted mine on the rear hump so I could reach it while strapped in.........I just went and checked and I did use a 12-point, 3/8" socket.