Google it and plenty of places in the states sell them though I've asked two UK Pirelli dealers to get me some without any luck at all.
They definately exist, I've got a pair of Diablo Supercorsa's (they're the ones you really want) in 110 and 150 sizes on the roadbike which is a tragic waste of over £250's worth of tyres. Or it will be if it ever stops raining.
I've also now got a pair of Dragon Supercorsa Pro's in 120 (on a 3.5" rim) and 160 sizes on the racebike to try at the Cadwell TD.
If I'm feeling industrious I'll rip the wheels off the roadbike and take those over too for some back to back tests.
Remind me again why I sold that spare set of rims
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Please do not PM me technical questions, if you can't find it on the Forum start a thread