JP is advising the 2015 with the Novarossi conical header. With my eagle I am currently running the 2031 with the short manifold and with the races the 3036 and both are running great. Also the 2052 is a very good choice.
Stay away of the GRP like manifolds from JP, I have one and the pipe is not fitted tight to it.
Speed is only fiction but a 130+km/h MRS4 is for real.