I have prothanes all the way around, and my hood rattles, my grille rattles, but my dash does not. I have them cranked down nice and tight and put a few minutes into adjusting the hood and grille, and thus far its not too bad. Bottom line is if you don't want any rattling, then deal with a sloppy motor mount setup. Another option is filling your mounts up with a stiffener. I know there are a lot of guys that run silicone in theirs to get more stiffness without harshness.