I wanted to upgrade my DRLs to LED and my headlights to HID. Had anyone done this before on the 2014-15 Buick Regal? Headlights would need to be a 9012 Bi-Xenon from what I have read and the DRL's would need to be 7443 with a CK socket? Is that correct? I also read that I would need four 7443 bulbs (2 for each side). Has anyone done any of this before. Any suggestions would be greatly appreciated.