Charged, smiley & others
I was faced with the same problems with fitting my Uniden in the Vitara, so I made up a roof console out of 6mm Ply and scrap bits of pine left over from the drawers I made for my long departed Prado.
I have no idea how to load pictures on here so if you wanted to have a look at how I did it, I can email them to you, just PM me.
It ended up being pretty easy. I'd imagine for a hardtop Sierra you could do the same thing, not sure about a soft top Sierra or Vitara though.
The hardest bit was covering it in the foam and roof lining to match the original roof. All up cost was $15 for the velour and foam. Everything else was offcuts or bits laying around.
It has ended up looking sort of like one of the "Outback" brand roof consoles (if you look really quickly from a long distance with your eyes half shut, squinting), as I also allowed a side entry space between the UHF and the centre roof light to be able to carry sunnies, my CD case and other bits like the Staun deflators. It works very well for me.
Anyways, let us know if you want to see it, or I could send the photos to someone else who could host them for me?
Cheers
Goldey
98 Discovery 300 tdi, XD9000 (on garage floor awaiting suitable bullbar), soon to be 3 inch suspension lift and 1 inch body lift, 31" Maxxis muds, custom drawers