While the engine was still on the lift, I thought I would do one more thing to finish up the back.
New flexplate. Since my engine block is a 2004, I won't need to use a spacer like some other LQ9/4l80e combos. This flexplate is made specific for my year/combo.
New flexplate bolts...
I followed ARP's torque specs for this install. I used a flexplate locking tool to help get 85lb/ft.
Finished! Now it can go back on the engine stand so I can finish the front side.