Rear caliper Girling 41/43

Hi

As far as I know, 41/43 means the piston diameter of the rear caliper of the V8?

That would mean there are some with 41 mm and some with 43 mm?

In that case... which are "better" and where were they installed (years / other vehicles)?

I have to take a closer look at the saddles for at least 2 vehicles, because the handbrake effect is rather bad as with so many. The whole thing is a little bit expensive... just a simple used installation will probably not fix it for long... that's more like letting it work!

But since I might. a little selection of old saddles... I can then start with the suitable ones...

Frank