u/Carlosbetheone

Hello everyone, I wanted to ask on what you guys are buying for the LS harness when you swap out the motor . I have a 99 gmc sierra obs that I want to install an LQ4 6.0 with an 4L80 . I want to keep ac & everything else but unsure where to purchase harness since there’s so many options . Would you guys recommend any upgrades or swapping stuff out while the motor is out ? Any guidance would help, thank you