I'm investigating the all three change myself. As a BSEE I'm familiar with electronics but not finding any D1S HID (single) for sale That's better than what is stock in my 2013 gtl. There's quite. Few sets for sale with ballast and caps to foil the can bus sys. I'll be upgrading everything. I did find for this bike you need 360 degree led emission since the reflectors are round. Lot of leds are sided which will not suit my needs. Standard depths are 65mm which fits on the D7 highs. My question for the forum. Is the center light D1S a hi/low or just low. And also how are the rings illuminated on the highs when not on? I can't see wires or bulbs. There's tons of lights out there And 2022 tech is really awesome. Doing lots of study to get the most out of my labor. It's a ton of work to get that headlight off and also check valves. If anyone can give me some good sources ide be happy. BTW, these lights are cheap for cars but it seems Motorcycle vendors are expensive. I know ballast, caps, led, lights and diodes so it's pretty cheap stuff now day's. Will update my finished product.