Looking to change my E90 suspensions..

[Agus Tan]

Hello everyone. Im new here and I'm looking to change the rear suspensions of my 2008 E90 320i. I'm pretty sure they are blown so I need a replacement. Any place in JB you guys would recommend for a suitable job including supply of the parts? I'm actually prefer used pairs as my car only has a year COE left and it doesn't make sense to me to replace them with a new set. Would appreciate the help! Thank you.