That is some great info on the Scorpio front rings! Do you also have the measurements of the 2wd Sierra rings, as you said it doesn't fit the 2wd? As I also have a 2wd Sierra that I might want to do such a conversion on if it's successful.

I also got a master cylinder and vacuum servo of a 1993 Granada. As I expected it is a direct fit to the Sierra bulkhead, so that's good. The servo is much bigger than a normal Sierra one, so I expect that the assistance is also much better.



But fitting it in between the turret, bulkhead and engine was a real struggle, as it's really huge, but in the end I managed to get it in place (just as a test fit).



BTW, I found out that this MC is actually also used on the 4x4 Granada/Scorpio from 1993/1994. So that car already doesn't use the Teves mk2 system (as on the Cosworth) anymore, it uses the Teves mk4 ABS system. So I'm no longer worried on running a different ABS system together on the 4x4. I actually expect that the better the ABS system does its job, the better it is in protecting the viscous diffs in the 4x4 as well.

I also ordered the smallest magnetic ABS ring I could find. The outer diameter of the actual magnetic ring is something like 70.4 mm, so that does fit within the 4x4 knuckle. But the metal ring supporting it is slightly wider and goes up to 71.4 mm, so that is actually a bit too wide. The other thing I not sure about is that the sensor is normally supposed to be placed to the side of the ring, but I need to have it on top. I did see a post of someone on Facebook who got a workable signal from reading the thin part of the magnetic ring, so I hope it will still work. To be continued...