I have having the Radenso and ALP combination installed. I have a BMW X3 M40i and the grills are not wide enough to mount the standard sensors horizontally... Radenso sends 3 standard sensors in their package for the front. In Ohio Dragon Eye is everywhere. Radenso says to mount the ALP heads below the lights. ALP says that would be way too low and that I would need a TX sensor mounted Horizontally in the grill with the 2 standard sensors mounted vertically in the grill as outlined on their website. Can anyone confirm that the best placement is indeed the 2 vertical standard with one horizontal tx? The reason I am trying to get confirmation is because it is an additional $400 use for the Tx sensor and GPS antenna since the Radenso ALP package does not come with them. Looking forward to your thoughts.