Well, I ordered a light bore (72cc kit), and figured the head pipe on a 70 has to be larger than the fiddy. That's just an estimate, I've never checked the 70 pipe out in person. Right now I have the stock 50 pipe, with a custom silence fitted to it, so I'm not needing a bolt on project, I'm not affraid to cut and fab a little. Just thought it might be a cheap alternative for the time being and for little cash.
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