Wih that porting and 215psi, you probably are better off focusing on a low-mid pipe and not worry as much about the topend over rev. Generally more compression will move the torque curve lower in the rpm range. All I have experience with are the trx5, trx9, lrd adjustable, and fmf and the trx5 works best for me. Like snowmaker and derby said, Neil knows what works with the way he set it up. I always trust what he tells me.
