I'd like to rebuild my Novarossi PT21 SP1 7 port circuit motor and have found this.

http://www.brooklynhobbies.com/index...OD&ProdID=2365

I'm doing the best to save some $$ as I'll be getting my own place soon. It says it will fit so would you do the same or just go with say a new motor? I'll ge picking up a Carlsen ZX21 from a friend as practice, but need a race motor as well.