jdmsomething

Hey, I have a 1996 R33 Series 2 GTR. I am having a weird issue, and not sure how to diagnose. When accelerating hard and the front torque goes past 10 KG*M (as shown on the stock GTR Gauge) the shifter gets a crazy side to side wobble, and you can feel it throughout the car. I tested different things, and it only happens when the torque is being sent to the front. Any ideas as to what could be causing this issue?