it is a bit odd that they weren't numbered since most other special production vehicles were, but possibly because there were released mid year which would have made it more difficult to pick a numbering system not used along with not knowing how many would be built. if it had been the beginning of the year or even if they had known how many were being produced they probably could have set a certain number of vin's aside specificly for the ss. just my thought on it, anyone else?