RE: Rattle at 70 MPH
Dark Corner, Slipknot is drowning out most of my noises as well but can still here the low hum of the Hemi! One thing I found that wasn't a noise but may later be a concern was while I removed my exhaust manifolds to install the new JBA headers the passenger heat shield over the manifold was loose. It is held on by 4 10mm nuts over the manifold studs. I found the 2 front nuts to be extremely loose(one almost ready to fall off) and the back 2 I took off by hand. Perhaps it is just a fluke with my car but if anyone begins to hear an exhaust rattle(I always found heat shields breaking welds on Mitsubishis when I worked for them) then consider checking this. The driver's side was nice and tight.