You might try this link, I have a picture of the ATS flexplate there.
https://www.turbodieselregister.com...175617-ats-flex-plate-issues.html#post1683181
I have never heard of the 12bolt thing. All of the flex plates I have gotten from ATS are 6 bolts.
A laminated one can compensate for misalignment better, and it's less likely to break input shaft than a rigid one.