We got an e-mail from a gal whose hood shook at 110 or so... I asked her what happens if she goes up to 120.
If your vehicle is a 2005 Supercharged and has not had the hood bolt recall and it may be affected by the recall, you see the Hood Bolt Recall post here:
http://saleenforums.soec.org/showthread.php?t=5422
For any year Saleen it might be a good idea to check the torque on the bolts.
On the composite hoods, it is normal to see some shaking.
That's about all I can offer... anyone else?