GM has them availible
from the racing warehouse, these are for track use only and will most likely void warranty along with destroy tires on street use but intended for racing aplication.
GM bulletin # 06-03-08-001
SI# 1538326
more info email me at
Jake@killerquad4.com
91 GA 12.080@113.99 best 1/4 mile E.T.
www.killerquad4.com
jake@killerquad4.com
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