Help ID Tracloc

Abodybomber said

http://www.summitracing.com/parts/rat-1304/applications/axle-model/chrysler-8-75-in
They are non stepped,lasted as 8 1/4,8 3/4". Not positive.

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These are the replacements I ordered, unfortunately. I may have to try to open the holes up as described above. I tried to source LH grade 8 tap bolts but they are silly expensive. Maybe a wanted ad might be in my future.