Managed to fail the MOT due to the D bushes on the front antiroll bar being worn. From looking around it looks like Poly bushes might be a good shout but I can't seem to find any information on if you should do the front/rear at the same time or if you can do just the front?

Also don't suppose anyone knows the OEM front rollbar size for a 2009 WRX Hatch?

https://www.importcarparts.co.uk/parts-info?id=12538&cat=96&sub=457&sec=476&var=38&dc=0&gen=&searchKey=&searchPart=

 

20mm on according to this

Thanks, went with the standard bushes in the end (less than £10 each).