65 gto flex plate needed

I have 65 GTO ragtop, its a 2 speed powerglide, need a flex plate i cannot locate one any place. Can anyone help with this? Thanks.

326? 389? Doesn't matter. A Poncho V-8 neutral balance flexplate is pretty universal (*except for the 421).

http://www.rockauto.com/en/moreinfo.php?pk=65723&cc=1350278&jsn=8&jsn=8

http://www.autozone.com/drivetrain/flywheel-automatic-transmission/pioneer-flywheel-automatic-transmission/29496_0_0