Bump, to say that I am running into the same problem as the original poster. I have an 84 5/8" and an 84 1/4" belt (that's all the parts store in my town had and I'm getting ready to take the 5.0 to where I am stationed). Should one of these still fit? I guess the only way to know for sure is to take off the existing belt and run it and just hope for the best. Just thought I'd ask.. thanks in advance.