The reason the lines were coiled is to make up for any flex and vibration. I'm not sure if it's 100% needed with the master cylinder being bolted to the frame.
Most of the flex comes from the body and frame not being one piece and them having some independent movement.
If you do decide to coil the lines on the master cylinder just get a piece of 2 to 2 1/2" exhaust pipe, clamp it in a vice and use it as a nice little bender for perfectly round curls.
