Well let me shed some light, ha! I have the Anzo U bars on my 08 Tahoe and the projectors sucks. I have changed the bulbs with HIDs and they suck badly. There's a dark spot on the vehicle in front of you. So imagine rolling up on a vehicle at a red light... the back of their car is barely lit up. Although the sides of their car is lit. I have a 4000 lumen HID kit at 5k. I bought the h7c which is 5mm shorter than the h7. I got a guy at Anzo to tell me. I have tried LED bulbs since you can get brighter bulbs than HID but they're physically too big. With the heatsink on the back of the bulb, the headlamp housing itself won't bolt into place. Maybe the Anzo Yukon headlights are different but I bet the projectors are the same. I'm about to rip mine out and put these in I think.
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