an i use the d60 steering arm?
If it's got a flat surface that is absolutely perpendicular to the axis of the kingpins, yes, that would be ideal.
I'm looking at aftermarket D60 arms now, e.g.
http://www.wfoconcepts.com/Uploads/ProductImages/inventory parts 052 1024x768.jpg
and the flat part in the middle would be perfect.
I donno what factory ones look like, as I am too poor to have a D60

-- A