Gas Tanks shape

[FalcoLion]

Does anyone know if the shape of gas tanks from Sport Classic Biposto is the same as the Sport Classic S? It seems to me that the only cosmetic difference on these bikes is Sport S having different front bracketry and cowling. Please correct me if I am wrong

[petrole]

The "S" tank has a ridge on both sides where the nose fairings meet the tank. Also there are little screw holes on the side where a Velcro plug goes into to "secure" the end of the fairings to the tank.

[Blitzen]

The S and Smart do not have cutouts for the ignition switch.