I talked with Chris at Carls about this just this week.
He'll be running the 2.6" lug, 3.0" pitch PowerClaw track on his sled with the AVID 7 tooth Cat style combo drivers. If they could run he 2.6 with their 8 tooth drivers they would.
With the small increase in size of the 3" pitch 8 tooth drivers ... There is not much clearance for the 2.25" much less the 2.6".
The 2.25" PC track has about the same lug-tip-clearance on the tunnel as the 5.1 stocker.
My 2 cents.
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