LS1 knuckles
caliper brackets
calipers
rotors
pad

Is that all I need to do the swap?

Can I use my stock LT1 brake lines with the LS1 brakes or will I need to buy LS1 lines?

 

I found that the LT1 lines worked better. Which ever one you use you will have to bend the brake line bracket. The LS1 brake line leavs the frame horrizontal and the LT1 brake line comes off straight up. You will have to reposition it down to get enough slack for lock to lock steering.

If your car has over 100k I would replace the ball joints.

 

You must have the banjo bolts from the LS1. LT1 caliper banjo bolts do not interchange.