Per one of the true gurus of this forum, it has come to my attention that it is common for Vipers to experience exhaust fume incursion into the passenger compartment due to dislocation of one or both of the rear vents located to each side of the rear area. There have been prior posts on this problem including how to fix it; however, I think that it is important to determine the scope of the problem since exhaust fume incursion is a very serious matter that can, under some circumstances, result in lapses in proper judgment, narrowing of field of vision, lung problems, loss of consciousness, etc. Correct me if I am wrong but I am not aware of Dodge warning Viper owners about this problem. If I am correct and Dodge has not warned Viper owners, Dodge should do so immediately. PLEASE POST IF YOU HAVE HAD THE PROBLEM. Thank you.