MKII steering parts Dimensions please!

[SDeMocko]

Hi all,
I was hoping for a little help with some measurements. My MKII is nothing but a bare tub inside and I am going to have to fabricate everything. I will attach some pictures with the required dimensions. These are the right angle horns that are mounted to the triangular pads. I am making two assumptions correct me if I am wrong. First I am assuming that the horn on the opposite side is identical just a mirror image of its mate. Secondly I am assuming that the Horn pivots in the exact center of the triangular pad. Having the original steering column and a couple of links and knowing where all the stuff mounts to the hull I am doing ok with back extrapolating sizes. Please excuse the simplicity of the drawing. Phase one will be sizes and shapes. Phase two will be redesign to something capable of being fabricated.
Thanks,
Stephen