Hello aLL For everyones info, I have come across direct replacement of the fuse clips. These can be purchased from any large mustang restoration on line shop in the states, the 64-68 mustangs used a simular clip that fits. When doing the search look up 64-69 mustang fuse box repair.
For a hq on you need two sets of clips, they are $35 a set, there is some drilling and revioting of spades on the back of some of the clips required, but this is easy. correct crimping pliers are a must for correct wire connection to clips.
So there you have it.