70 suburban break questions

[suburbman72]

ok so i have my suburban now with 6 lug drum breaks all around and i have a parts frame with a 5 lug rear end and 5 lug spindles and callipers and the whole 9 yards to convert my sub to a 5 lug disk break rig, my question are

1. do i need to buy a different proportioning valve?
2. do i need to get different break lines?
3. do the ball joints in my drum break setup fit the disk break setup?

thanks