8 3/4 shock plates

Heres more pics. I believe 8 3/4"?
Just wanting to confirm.
Shock studs are 1/2" fine. Ubolts(I'm keeping) are 7/16" fine. Ubolts are 3" center to center.
Thanks
Steve
Those look like 7 1/4 plates, not 8 3/4.

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