No. Same size tube, same double flaired compression nuts at the wheel cylinders.
There is a slight difference in the size of the hex head on the nuts at the master cylinder (I believe the threaded holes are the same for both drum or disc in the master cylinder) but the nuts are a different size.at the combination valve required for disc brakes to work properly.
You can find the some 3/16 inch steel tubing and the nuts at NAPA or attempt cut them off and reuse yours after double flairing the tubing if you want to try and rig up some pluming to get the fluid from the master cylinder to the comination valve.
Basically everything but the final six inches is the same. Because the disc brake uses a combination valve that the drum brake doesn't the plumbing has to be modified to change over, but it is fairly simple, if you have a tubing cutter and a good double flairing tool.