Thanks I will order those from your link and then I will install them when I get them. Thanks for the help. Do you know anything about the Sprint Booster kits for the XF's. This stuff is all new to me and you seem to know a lot about the XF's? Are they worth the money? People have been talking about the change and increase to the pick up and exceleration of the car the way the stereo is enhanced by this mod. Heck if I can make my Audio system sound way better and give the car way better pick up all in one week end for a few hundred bucks that sounds great to me. What do think?