What happened to a 10 and a half inch clutch low mass flywheel starter bolts. See head marking. This is correct for early Big Blocks Z28 ZL1 L88 and all small blocks up until 66. Also correct for ZR 1 Corvettes. Three sets of C head marking available all excellent restored condition. $40 per set shipped to the lower 48. They do not reproduce these with correct head markings.
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