Depending on the yr of your truck they made a some changes to the transfer cases to replace earlier versions because it wasn't strong enough
Sent from my SCH-I545 using Tapatalk
Need input on if I need to change out the fuel lines and return line regulator. I have a 2010 Sierra it came stock with a 4.8l flex fuel, I upgraded to the 430hp ls3 and changed the fuel pump to walbro 450, I'm running 60# injectors and a procharger supercharger D1-sc1 with 10# of boost. Motor...