Are you doing total restoration? Under, over, inside, enginebay and the lot? If so, a week or so before you start on removing the propshaft, rearaxle, gearbox etc under the car. Take some good rust solvent and spray all the bolts that you are removing. Do this several times before dismantling and you have a much bigger chance of getting all the bolts of without anything braking. And you are guarantied to brake some of the clips on your sideskirts. But you might save them all if you are very, very careful. But they are still possible to get from Ford, but expensive. 4£ each in Norway. And there are 8 or 9 on each side. Cant think of anything more at the moment.