HI I run the swaybar when the track has grooved up it doesnt affect the bump handling..with the swaybar on it just keeps the car flatter in and out of the corners.
I find when the track is very grippy the rear of the X6 digs in hard and tends to fall over in the corners.....the swaybar has the feel as if i was running the new saddlepack chassie but you dont have to change the weight around as ive got my car working very well....I find it works really good and smooths the steering out (no pushing it just holds the the corner better)
I also recommend trying the Brian Kinwald front mod that moves the front hubs forward! you dont have to grind the front arm like Brian does all i do is remove 2mm from the front hubs then replace with a 2mm washer...you do have to flip the steering rack over and remove the front hole ....
I run the rear wheelbase short arms and hubs.. But because you moved the front forward the cars wheelbase is in MED...wheelbase....But you still have the weight over the rear wheels

Im hoping to post PICs today....fingers crossed with two new team mates joining the X FACTORY team this week the teams getting stronger all the time..........KICK ASS X6
I will not be going to the nats -but i will be at the NSW titles.
The Doctor