If I were to get the block bored myself, how many mm's could I go if I had the crankcase bored to match? I know a guy whos taking CNC maching classes and could take it in as a project and do it for free. I guess I'll have to bore it to where I can buy a piston and rings for it. I could also probably get him to make me a custom header pipe to weld the slip on muffler to. Do you know the part # for the FMF slip on or maybe have a link? I've tried searching using various 2 stroke dirt bikes and all its giving me is $300+ exhaust systems. Also for the custom header pipe, how much bigger would you recommend? and if there is a better angle to run it, or run it just like stock just bigger circumference? Keep in mind I do plan on getting a no rev cdi in the near future, probably before the big bore kit.
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