Yup I am using the Sirio 23 and Sirio Big Bore and I gotta say that its a good combo. Although I ran my Old PCR pro Pipe to break the mill in and between the two, the sirio Big Bore is Hella Loud. But the power is ridiculous! I really need to get a wheelie bar cause my head got all scratched due to flipping it over so much.
Hope that helps
Jon