if i were to do a disc brake conversion.. can i use the GM soft lines then to a hard line witch goes to the T connector on my axle? or do i have to buy the $90 each braided brake line? im planning on getting the sky set.

http://www.sky-manufacturing.com/axle_differential.htm

85' Pickup, Crossover steering, 33x12.5 A/T, 4" lift