I took all of the front suspension and disc brakes from a 1972 frame and swapped it all over to a 1969 frame. I used the stock spindles and 2" lowering springs instead of drop spindles. Here is a link to my build thread where I did the swap. I posted a few pics of the brake lines in the thread as well:
http://www.67-72chevytrucks.com/vboa...=620369&page=7
Gary