Hi,
I can only remember Tamiya officially releasing 3 versions of the whale tale Escort Cosworth,
Tiger stiped ( Blue and White )
Michelin Pilot ( Yellow and Blue )
Repsol ( Orange and White )
I do recal seeing a Bastos Escort Cosworth, but I think it was painted up by an individual for a Tamiya Eurocup race event back in the mid 90s.
The whale tale Escorts are quite rare now. There are a couple of new ones floating around in Japan and in America, but they are over a £100 plus shipping costs. The 1998 WRC Escort is still floating around in the shops, but has lost some of its charactor with different bumpers and no whale tale.
I hope this helps you