retrofit experts advice needed

have a wrecked 2012 cts-v at my dad work and the headlights are good wondering if i can break those headlights apart and use those projectors on my sierra and/or if it would if be worth my time, i love the look of a lot of the custom retrofits i see online, but just dont wanna spend the money nor do i know how to do it? what is the qaulity of a factory hid gm projector vs aftermarket mormito or whatever

opinions?