I took my car to Peddars when I first got it for an alignment and 28 point safety inspection, they got all freaked out and flustered working on an import, told me my whole rear suspension setup was f**ked, would need to replace the whole thing, they quoted me $5000 ffs.
Took it to WA Suspension for a second opinion, Brad called me back after about an hour and said it's really not that bad, there was some slight play in the rear sub-frame bushes that could be fixed with some pineapple bushes. Got the work done, ended up costing me about $560 all up.
Seriously, take it somewhere where they know what they are doing (read: WA Suspension).