New ARP flexplate bolt set.  For automatic transmission flexplates, attach to crankshaft.  For stock/OE flexplates only (NOT for 4L80E flexplates).  Fits the following:

98-02 LS1 V8 Camaro (with automatic transmission)
98-02 LS1 V8 Firebird Trans Am (with automatic transmission)
04-06 LS1/LS2 GTO (with automatic transmission)
04-07 LS6/LS2 CTS-V (with automatic transmission)
97-12 LS1/LS2/LS3 Corvette (with automatic transmission)