Had to do mine last year as well. Not bad for a 16 year old truck I guess, but the only lines that are original are the front ones from the master to the front flex lines (all 3 flex lines are new), and the rear one from the master to the ABS module in the frame rail (has a ABS module in the frame for the rear brakes, but none for the front). The hard line from the module to the back rotted out a few years back, then I ended up replacing the lines on the rear axle with those wire wrapped heavy ones to protect them from rocks and such.
You also have to watch for wheel cylinders if you have rear drums, I always have issues with those and now just replace them every time I do the brakes (try to do them every 2 - 3 years at least). LR
'09 Ford Ranger FX4 with a mean owner