The Bounce

[Big hammer]

I’ll add check the front radius rod to bell housing connection and the rear radius rods connection at the front of driveshaft tube. Bothe of the connections have castle nuts and bolts that might be loose, remove the cotter pins and tighten the nuts, don’t forget to replace the cotter pins!
One more thought, do you have float a motor mounts ? I installed FAM’s last year and noticed a difference until I adjusted the center bolts on the mounts