help needed

so my mk1 octy vrs, has a weird fluttery chattery noise weird description i no but its a weird noise. 

first i think left cv joint as i had some noise so i replaced this noise still there recently ive replaced the drop links arb bushes. pads and discs.

now the noise is only during acceleration if i gently blip the throttle  i can hear it obv as the rev/speed higher it gets drowned out. 

so drive shaft is my last thought?  any ideas?

thanks