Someone found me these, my ls2 is from a c6 not a gto which the bolt hole is different sizing by 15mm
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ARP 134-3610 Head Bolts 2004+ 5.3 6.0 6.2 7.0 Gen IV Kit LS Engine HP Series
Michigan Motorsports specializes in LS1 performance Parts, LS3 Rocker Arm Trunions, Electrial harnesses and adapters, and Diesel Parts
