Re: Drivetrain "snap" (clunk) noise
Sounds like to checked or replaced anything that moves or stays stationary and missed something so start over.
Can you duplicate this clunk with the car parked and shift from F to R?
Block one wheel at a time and test with brakes released.
When you can hear the noise but can't pin down the direction or location, use a Stethoscope or feel parts that are save to touch.