I looked into this when I got my truck. It is possible, but I gave up due to cost alone. OEM new LTZ lights are like $1000+ for each one, might even be $1500 each, I don't remember exactly. You can find them used on eBay for $700 or so each, but they normally came off wrecked trucks and have some broken brackets or scratches. After that, you just need the resistors to make the LED turn signals work properly. I believe there is also some adapter needed for the headlamps as well since the LTZ uses LED bulbs instead of HID like the LT models. The colored trim just snaps off so you could swap it or just paint it to match again.