SM Head Install... forgetting anything?

Oh, when trying to get the right belt. I learned the parts numbers help. Say the number on your current belt is 15485. The 15 is the width the 485 is 48 1/2” long. Sometimes they swap the numbers 48515. There is no 48 width. So you know its 15 wide and 48 1/2”. Helped I could search by part number online increasing the length 1/2” at a time. Then just walk in with a part number. You may need a longer belt for the alternator.