Can't find the specs for the exact engine model, but all novarossi/top/rex .12 that are rear exhaust, 3-port, turbo are about 1.5 HP and between 35,000-40,000 RPM. THis is the specs for their newer line:
http://www.novarossi.it/content_uk/p...12t1-specs.htm
hope this helps.