I'm coming up with PN 90119-09009 for the 6 bolts that connect the flexplate to the torque converter.
TORQUE CONVERTER, FRONT OIL PUMP & CHAIN (ATM). Toyota 4Runner | Germain Toyota, Naples FL
It's been a while since I've removed a flexplate so I cannot be certain of the orientation. Hopefully someone else remembers or you can find something online.