Possibly. I'm told their GS expert is overseas at the mo though, so you might have to wait.
As for the Rame Ghibli Spyders, I would say zero too. I believe there were three coupes made (for some reason I think this was for the launch of the LE version) - one in the US, one in the UAE and one that MaserSod owns, currently for sale at DL.
As for yellows, I dont know but I would guess at very few. I would say 2-3 GS Coupes in the UK and maybe one Spyder, but not too many more. All guess work though.
ADAM, where is the pic in your profile from? The white GS....is that Bianco Fuji or Bianco? Do you know the owner?