Valet
IS300 SX > Accord
take out the counter weight in the trunk lid.
Didn't know that existed. I'll look into it. Found that the bolts holding the rear speakers are still causing noise. I put hot glue around it, seemed to have deadened it for now. Still need to look in to getting my spoiler to stop rattling. But I haven't even looked at it, so I'll probably think of something.