The Lauro Collari-Innotech engines is what you are looking for.
They are Picco based engines, with some mods by L.Collari
That particular engine you are asking for is based on the Picco
XP-12, and called XS-12 by Collari.
I have one this season here in my country, and the engine is highly competitive with any Nova based engine, but had to ditch the original carb and fit on a Nova carb. Duration not on par with the Novas, but hell this is racing. More low end than the Novas, with same high end. Holds great at high temps, and had no problem with it after carb change. I even won a heat this last sunday and was winning the second but tire problems held me back, and maneged a 3rd overall.
You can find more info on them at: www.lcollari-innotech.com
Their current engine is:
XS 200 On Road Racing
CAPACITY: 2,1 cc
WEIGHT: 220 gr
Hope this helps