No we are talking about Lamberto Collari Motorsport engines, which are Sirio based engines and are available in .12 and .21 types, both standard and hand modified by his father Mauro Colllari. The USA importer is www.werksracing.com
and they show at their site the .12 on-road engines and the .21 off-road engines. Don't know if they are bringing in the .21 on-road engines yet.
At Ace Hardware and hobbies they only have the .21 off-road engines
Hope this helps