I was looking at my procharger for my 99 gt and noticed the belt was cracking a little from age. This is my first belt change on this setup since getting the car so I contacted procharger and they recommended to use a gates 106.5 belt on my car with the pulley I was using. When I put the new belt on it was short... like really short. I look at the old belt and see that it was a gates 113.0. I have stock pulleys on everything so I'm very confused on how there would be this much of a size difference. If anyone know why this is please let me know cause I'm kinda baffled