Headlight help??

[Jered1987]

So have my k10 with the dual square lights and then signals in the grille Im wanting to do legal upgrades what lights can I add , I prefer to do something plug and play no extra harness.
I either want to do leds or like halo or projector lights , wondering if I'll need a harness or the old one will work for the led tailights from brothers.
Any suggestions based on what others have done and pictures would be great.