There is an implicit belt allowance with the pulley allowance, given that - by design - belt(s) will have to be changed with a change in diameter of pulleys. That is further clarified with the restriction that "type of accessory drive" must remain as stock.

Finally, within "Engine drive belts may be replaced with others of equivalent OEM specifications" so belts are implicitly "free" as long as they are equivalent to OEM (there's a wide open hole), and there's no subsequent restriction on the number of belts...



GA