GT500 vs. ZL1...
Who was it that said, "Pro Street vs. Pro Tour"?!
Number 3, I think some of the time discrepancies are due to atmospheric/track conditions, year-over-year, and some is due to tire upgrades. SS on Pirellis while 1LE on Goodyears that complement the suspension upgrades; some Vettes upgraded to the all-conquering Michelin Pilot SSs. Which BTW would be a helluva tire for the ZEE, OE...
There is no substitute for "gription"...
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