What i mean to say is the os spec 2 is a very fast engine but if you are going to spend that type of money you might as well get a novarossi, jp or murnan, and i have seen the os speed 2 on the track one guy that i know has it and my murnan modified rb r3 was much faster had more bottomend and topend and i race at 301 raceway which has one of the longest straightaways in the world so if you have power it shows.