The Latch Brace is riveted to the hood at the front with special large round flat headed rivets and it has 5/16 Flange Bolts at the back. You should have captured/welded in nuts at all of the bolt locations.

The X brace uses the same bolts as the latch brace.

Here's a good example of the bolts.

https://www.mcmaster.com/92979A245/

Mike B smile
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Mike Boteler

1956 Chevy 3100 Resto Rod
1952 Willys M38 Army Jeep
1983 Jeep CJ7 Laredo
1984 Jeep CJ7
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Silver Spring, MD