Headunit arrived today and did a trial fit.
BEFORE:

OEM Radio out:

Halfway there:

Fitted!

I've
got some more things to do to the headunit such as properly earth the
unit, install the rear view camera and add the iPod connector. Pics to
follow.
Build-up ThreadWANTED: Fully smoothed or R-line rear bumper, genuine R32 bumper (smoothed preferably?) and genuine anni skirts, PM me.