Clanking Noise From Rear

[KGaugh1868]

Anyone know what could possibly be making a rattling clanking noise when I hit bumps from the rear? I thaught it was my exhaust making noises but it is secure and I used high temp rubber around all brackets that could possibly come close to hitting anything. I lowered my car using Eibach Springs and then after I did that i noticed it. First thing I did after was replace my rear struts cause I thaught that could have been it. Well I was wrong. It still does it. Could it be bad bushings on the sway bar causing the noise? If i remember correctly they didnt look to hot after installing the springs. Any suggestions?

[MaStaMooN]

I have the same problem with my eibachs, and Axio had the same issue with them on his last car. I notice it most when I have a full tank of gas. Not sure what it is, thinking its the coils comming together on compression.. but not sure.