Belt guidance

For 40 years I was using the wrong PS belt. It was pretty much not letting me adjust tension properly. It was also a 3/8" wide where now I have the 1/2" wide and adjustment is now in the middle of the bracket slot. I wrote the # down in my book but I doubt I'll ever need another new one. I keep a book dedicated to my Cuda with all the maintenance done, mileage, date and cost. In the back I list all part #'s for replacement parts. I keep a book in all my cars so I know when maintenance is due.