Not quite sure how an RGV makes it's power, but the NSR is legendary for it's midrange. I suspect the top end power is similar between the two, it’s just the RGV has **** all low down.

As for pipes, the std MC21 pipes are as good as any aftermarket set. It’s just they weigh about 2.35 tonnes. A nice set of Tyga or Jha’s are soooooooo much lighter. Nikon’s are pretty good too.