That isn't rod knock. What condition are your motor and tranny mounts in? The engine will deflect under acceleration. It almost sounds like something in your drivetrain. Still on the stock driveshaft? Could be your carrier bearing is worn out. Inspect that.
https://youtu.be/wmtBqNnnvrs
Thats aggressive rod knock. Youll be able to hear it idling or free revving the engine from a standstill.
Follow your exhaust back to near your diff. If your exhaust mounts are loose ive heard of the flange on some exhausts coming into contact with the inner cv joint/output flange on the driver's side axle as well.
Have you put a timing light on it and verified your base ignition timing?