From you comments, we can summarise that:
- The noise is from the front right
- It only occurs under acceleration on left turns, i.e. your loading up the right hand side of the car
- The noise is a rattle / grinding
- You know you have some iffy front bushings
A "wub wub" or grumbling noise can sometimes be a wheel bearing, and this is easy to check. If you jack the car up so the front right wheel is in the air, hold the wheel and tyre at 12 O'Clock and 6 O'Clock. Then try to push it in at the top and pull out at the bottom and visa versa. This should be solid, however if there's significant movement then you have a bad bearing, or something is up with the hub.
As you say you have some bad bushings up front, these could be the rattle / grinding noise. Remember their job is to allow movement of the wishbones to the chassis and if worn will allow the wishbone to move too much, and potentially rub into some chassis or bodywork. I've had a car where under heavy breaking the steering wheel felt like it was going to fall off it moved so much! All down to a pair of wishbone bushes.
Also, remember that whilst you can push and pull, and think there's no lose body work etc... At 100 kmph, with 1.6 ton of metal pushing things around, there's a lot more weight and movement than you may think!
I'd first check for the wheel bearing, followed by the front bushes, the ARB bushes, and any play in the steering rack.