oop missed a bit
in answer to your second question
the book car with the sierra upright has the lower bone say level with the ground at ridehight
however this is irelivent for yourself
you will find that having the lower bone inclined towards the chassis will make the wheel gain positive camber in droop and having the upper bone declined towards the chassis will make the wheel gain negative camber in bump
this can be desirable in some cases at it can help the tyre contact patch stay upright in a corner under roll conditions but is detremental under acceleration and braking.
tilly
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