2008 Buick Lacrosse with 3.8l. I am replacing the Flexplate (flywheel) to new engine crankshaft. I cannot find a listing in any part supply store for these. AI is useless There are 8 bolts. They seem to be 5/16-18 by .625 long.(but maybe they are a stretched, 8mm 1.25) The service manual says to replace with new ones. I am thinking they are TTY type because it says to torque to 11 ft/lbs with addtional 50 degree turn. The manual says nothing about loctite.

Any idea what size they are or where to get?

Thank you,
Don