Have a problem with Vibration on the back of my car

[BRETTCOLLINS]

update on this problem. changed every bush at the back of the car. all rear suspension arms and new rear custom subframe bushes. has tighten up the back of the car No end. Fitting New front subframe with custom bushes at the end of the week as will as poly bushing the front of the car to match the rear. when this is done every bush on the car will have been changed. Adding to the already fitted uprated engine, gearbox and rear diff mounts. this full transmission system should be finally locked down.