Hey everybody what's up? I got a friend that wrecked his truck and he had a Ground Force lowering kit # 9857 2-4 drop he purchased from summit about a month ago. He is going to take it off and let me have it for my crew cab. My question is what else would I need to make it a a 4/6 drop? The 2/4 consit of Spindles and rear leaf springs w/hardware and rear shocks. Any info would be great thanks.