Interesting discussion. Not a 355, but my 96 NSX has 23K miles. I replaced the original belt last year. It looked absolutely brand new. I feel very comfortable allowing that car to go another 9-10 years. On the 355, it has been about 3 years since its major. Seeing some of work they did on other stuff, I will do another major pretty soon. At that time I will see what everything looks like when it comes apart, and make certain it is done properly. Only then would I feel comfortable.