Been meaning to fit an radio to Ralph as he's my daily driver for some time now, and after some thinking of how to go about it it's finally done  To house the radio itself I dug out the old military 6 way switch that came out of my old 88+2, marked out the hole for the radio and got the Stations workshops at work to cut it out on their milling machine
Quick test fit of all the panels

Had to cut out a but of the metal behind where the radio would fit into
Decided to simply mount 2 speakers in a bit of thick board at the front of the roof, simply held in by 2 wood strews at each end after taking 2 of the small nuts and bolts out

Holes for the speakers marked up and cut out

Got some white sticky back plastic to cover the speaker mount/board with too before refitting, but forgot the pics today as it was getting late, thanks to me trapping a wire for the speakers in the mechanism for the vents and shorting out the  circuit    Luckily I had some spare speaker wire and working