yeah.. it actually got quieter when i removed the drums.. i had them held on with 2 lugs. I'm pretty sure it's the ring/pinion rubberbanding and making the driveshaft make noise.. it's 3.5" steel and rings if you tap it. i'm way too paranoid... i can put the seats in and see if it moves next.. i need to look into insurance/plates for historical cars in mich