You want the thrust arm bushes and since you have to go in you might as well do the lower ones too. Makes about 80 quid's worth.... I'd goto www.nolathane.com.au and www.noltecsuspension.com, even posted from Australia it'd be cheaper given the exchange rate... Nick
PS. I've had these bushings they work very well indeed, but you feel the road more than with M5 or 750 bushings. But they never break...