Ok so I spoke to the dealership, they apologized and say that that the badge was taken off to buff a scratch in the top coat out of that area and the guy forgot to put it back on.I was a little dubious but then now remember, after I paid the deposit I was taken round the car and asked to point out any little scratches that i wanted seen to and the sales guy circled them with some kind of white marker. there was one in this area. I also thought ...Hang on I have the sales video link of the car when the dealer first put it up for sale, so I looked at it and the video clearly shows the 3.0 Si badge on both wings, I am now satisfied with the explanation. was a little worried for a while there, phew!!
Youtube vid below ( reg has now been changed )
http://youtu.be/q-0KbkLMR7E