Speed 6 4.0 vs 4.0S - what's the difference?

[Jappo]

I see Tuscans advertised as 4.0 and als0 4.0S. Does anyone know the difference betwen an "S" and a non "S"?

Edited by Jappo on Friday 27th March 14:47

[Jappo]

Ahaaaa, seems it not just me that doesn't know

[Targarama]

Try the Tuscan forum, or even the Speed Six forum