Well, I'm trading in my 2001 wr426 for on 05 XR650R. Yeah, a bit or weight difference but I'm 250lb and do strongman/pwr lifting so an xr650 isn't gonna be a big change over a 426 for muscling it around. Im 6'4" so the seat height on the WR is perfect but the honda is lower. Can I lower the footpegs any, or maybe increase seat foam? And the bars are low, can I add a spacer or something to raise them? I plan on doing the usual power-up mods, 68s pilot, 175 main, restrictors out, uni filter, exhaust tip, and intake manifold. Shound I use a different needle, or just raise the stock one 1 notch? Hopefully this will put me to the same acceleration as the wr with less revs and more reliability. Oh, whats with the stock carb mod to decrease hesitation ( air jet cutoff valve) does this work? And I'm keeping the stock carb on it. Anything else I should know? More tips for more power? stock exhaust with cut out baffel or racing baffel? aftermarket pipe? (sound is no object where I go, and I love a deep sounding bike) I do mostly trail riding and plenty of dirt roads. I saw the brp weak points on the pig pen site. Hopefully this will get some replys. I have searched lots but still have these questions. Thanks.