Will 03 wr250f FMF "Q" fit an 04 wr450f ? The pipe will physically bolt on good, but is it the same Q pipe FMF sold for the 450 or will it be too restrictive ? I can't find dyno charts, where I can find them ? How is the power compared to the pro-moto billet insert ? What are the sound dB on the Q and the pro-moto insert ?