Launch clunk

2006 ms6 always had a slight vibration on accel in 1-3 kinda like really bad rotors but when I’m accelerating not braking. The real issue is when I launch the car I get an awful clunking noise. Any ideas? Sounds like it’s coming from the passenger side or slightly to the left of the shifter.

 

Motor mounts can be a start, lower control arm bushings, subframe bushings.

 

Just as raider said my first thought is motor mounts, in particular the passenger and rear motor mounts. However with slightly left of the shifter could also be the transmission motor mount.

I don't have a ms6 but I wonder if the rear diff mount going could cause that issue in terms of transference back to the engine, I mention this because I know the stock rear diff mounts are prone to failure.

 

Sorry I meant right on the shifter I’ll check everything out this weekend.