Ian,
Ahmed has already advised me that the front ARB could do with being softer, hence why I want to try a bladed one that can be softened off, but no-one can give me even a rough starting point of saying this bladed one is equivalent to the standard one on position X .

I even have the Grp A cross-member, so the ARB is all I need . Can you point me in the right direction as in which bladed ARB would be a good starting point, as when I ask anyone who you would expect to know, they just shrug ?