be prepared to get lapped MANY times over, My guess by the question you posted is that you are new to at least Nitro and maybe even large competitions.

A good legal stock .12 will have more horsepower than your OS. The NSR12S3 has 1.54bhp. Up to you though but you would be better off in a stock class. By the time you pay entry fee's, tires etc you could buy a new O.S. TR Type R spec (new) and its supposed to be fairly good and legal to run in stock classes.

John