We picked up the 71 Lemans wagon year, i always dug the long roofs, also convenient since my fiance has a 14 and 7 year old, gonna put front discs on , and eventually motor swap after the bodywork and everything works as it should.
I can highly recommend front disc brakes. It's one of the best upgrades that can be done to an older car that is going to be driven as it was originally intended.