Anyone know if the lift/duration specs for the older 450's is more agressive than than new '06 450's. P/N has a -10 on each item opposed to the -00 from the earlier 450's. Really like the new bike but the engine is still "soft". My '05 benefited from a '03 CDI box, White bros. pro series pipe,and the '03 piston. Now ,how to get the new "meek" 5 speed to perform somewhat like it should. Not sure what will fit and what wont. Yes, I love the new found smoothness, but come on,Yamaha give us back that '03 power!! I really did also perfer the 4 speed but with some gearing changes we can live with the 5. Hey, Ya'll ,anyone know how to get this new one some more beans ,let me know.