I installed bilstein shocks and h&r springs a few weeks ago and now the car is constantly clunking from rear end. I found a topic that said you have to buy a bushing kit with bilstein shocks. Well i didn't and pretty sure that is the reason of the noise. Problem is i live in europe and the kit would cost 60-70 euros which is a little steep just for couple washers and o rings (shipping, import taxes etc). Can someone tell what size washers and o rings i need for the rear? The kit has a sleeve too.