[66fastback]

a couple of the basics here.....

1. your old ball joints will fit perfectly.....assuming that they are in good shape......old Mustangs seem to be rough on ball joints.

2. the master cylinder will need to be replaced regardless of your choice for bore size. Disc brake MC and drum brake MC are not the same. The larger the bore the firmer the pedal.....and the harder it will be to push. This is not exactly a bad thing......it gives good feel and moderation. Smaller MC bores will give an easier pedal, but at the expense of feel and travel.

3. The hub on the Granada brake discs is LARGER than the old Mustang hubs.....and original wheels will not fit over the larger center diameter. Stud spacing is the same, but it is a real @#$% to think you are done and find out that your wheels won't fit.