I have to disagree with the no re-jet needed part. Those are almost totally gutted pipes and most certainly need to be accompanied by re-jetting or you will run scary lean. Re-jetting is a simple matter but requires some patience since you may have to jet a couple times before you get it right. Use Pat's jetting calculator and select 2 baffles drilled along with what ever else fits your set up and location and that will get you in the ballpark for those pipes.
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