Good News: PowerFlex (www.powerflex.co.uk) has developed polyutherine Upper Control Arm bushings for all E34s including M5.
Even bettter news is that they are available on ebay. Just search for e34 thrust arm bushes
Be aware of one thing though, before you fit the rear subframe poly bushes understand that it will cause alot of noise and vibration to be transmitted into the cabin. I for one dontr mind this too much but others wont be able to live with it.
I know vchachanidze is offering them already, however if anyone wants to pay by credit/decit card and buy online let me know.
Thrust Arm bushing especially is a week point of E34s - they often fail and cause front-end vibration.
Cyrus, Very good point regarding Rear sub frame bushes - I spoke to PowerFlex regarding this a few minutes ago and they are doing more work on this particular bushing (PFR5-606) to overcome road noise/vibration problems. They have many years of experience in this field an I am confident the problem will be solved soon.
Thrust Arm and Anti Roll Bar bushings are in stock for next business day delivery and for sale right now on ebay. We accept credit/debit card payments using PayPal as well as cheque/bank transfer and good old fashioned Cash on collection.