B&M flexplate balanced for 360 OR 360 balanced converter

I'm looking for a B&M flexplate, part number 10239. It's the one made for balancing a 360 with a neutral balanced converter.

They are in backorder from B&M.

I would also be able to use a lockup torque converter with 360 weights on it. If anyone has something available, I'd appreciate it. Thank you.