[AZKen]

Using old lines is OK as long as you end up with the dual master plumbed per instuctions. I.E. Typical convention for drum/drum. Generally, rear MC port goes to front brakes and front port to rear. Line goes to rear and splits to each wheel. Line goes to front and splits to each wheel.

VERY important to bench bleed the new MC.

GMC trucks are not referred to as C10...that is Chevy. We can still help on brakes however.