Not Ranked
If you are at the build stage, I've always thought John Chestnuts solution was the best I've seen: he runs the headers up and over the footbox. This gains you probably 5" in available room to extend the footboxes, since you dont have to leave room for the 4 exhaust pipes. I have pics but they are in .pdf's so I cant post them. John is a member on here, he could send to you.
Its of personal interest as I'm 6'7" and mine is a bit tight on legroom.
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Mark
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