its not just the plate that rattle back there, its the wiper motor, plastic panels, and even the rear bumper at times. sound deaden the whole lid and trunk area and or do the expanding foam in the hatch door. the expanding foam is a good cheap method. adds weight to the door so if the struts dont hold it up anymore you might want to get stronger ones. i didnt have the issue with it not staying up unless it was 20 or colder out.
hn155: Rockford punch pro speakers, t400.4 deh 80prs, full audio build to come. working towards 175hp n/a, simple but fun.