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I am in the midst of getting everything together for the 650sx conversion to 750 sxi engine. I was checking out a few different options for the exhaust system. My setup: Big pin sxi engine with mild porting and milled head (180 compression). I have three factory pipe options for the exhaust...

Anyone have any experience with this. I dont have a 750 pipe to see how much work would be done to get it to fit. I talked with factory pipe this morning and they said that there would be a difference of 10 h.p. if I switched from my f.p. 650 to the 750 f.p. So my question is how much work...