Well someone at work made me an offer I could not refuse. And I'm glad I didn't. I love the look of the GP pro and it sounds good too. Not to loud with the silencer in. With it out its hard to believe there is even a muffler on there. Its 7lbs. The stock mess of a laberith seal is 14.5 lbs.
At about 4k the engine is more responsive. Feels like there is much more punch when cracking opn the throttle. I like it. The low end power isn't as soft feeling. Maybe muted is a better word. She power wheelies 2nd easier than before. Top end I can't tell. It could loose power above 9k I wouldn't notice. I'd still be holding on for dear life either way. So an extra 5(?) would not open my eyes any wider.
Anyway. Here are a few pics of the new pipe. One can also see my new bar end mirrors ($17 ebay specials). Some time after race season ends I'll take it to the dyno so I can post before/after numbers for the pipe. And the inginiton UNretarder doohikee that I have yet to order.