The main differences in plumbing relate to drum or disk brakes on front and power boost or not....
Boosted or not also makes a difference to rears....
Is the front suspension have the brake lines in front of the cross member or behind the cross member?
Drum original is behind
Disk original is in front
Boosted systems use a BIAS valve ...post a pic of the master cylinder and pipes and the front brake system....that will point us in right direction...
