http://www.powerflexonline.com/Rear_.../pfr19-210.htm
The above link are the ones i tried to fit, now from the bottom of the hole to the flat edge of the bush needs to be around 3/4mm thicker to fit my car .
As far as i know its a standard roll bar with standard ford bushes .
May be worth the people who have fitted these to just go have a look and see if there is movement left/right on there roll bar .
As soon as i removed the ford bushes i could see straight away the size difference.