Ck'ed original hardware drawers and two original Pontiac usage 12 bolts.
Both of the original bolts, remove with 1/2" socket. the head is .215 thick. no recess in the head, no washer type lip like original rear cover bolts. TR marking with 3 "rays" (grade 5). threads are 1" long. can't let these go, but am,again today, moving core rear ends and might come across one.
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Buzzards gotta eat... same as worms.
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