Thanks for the input fellas.
Deano, I have seen the Ford Escort Specialists listings but honestly, as I have Proflex front and rear, its really only the braking part I'm after and at the end of the day I think AP or Wilwood is the way to go. Only issue is I use 5 stud 114.3 PCD (Falcon) pattern so will have to sort hubs out separately.
My first conversion back in the late 80's was a Pinto into a mk1 Escort. I remember getting some V6 struts (complete assembly and easily come by back then!) and that was about it in that area, everything worked. Mk1 Capri and MK1 Escort. All good.
Yes Robbie, as for the earlier bolt on arms versus the one piece cast I know there is a difference but I have never bothered getting one of each assembly next to each other to measure up. As you used GP4 struts, anything from the UK should fit as per Smcka's comment. The calipers are the same.
There are more suppliers of AP than I thought imaginable!