Any of the Daiwa real 4 spools should fit however they are all expensive. The Daiwa site has several options for shallower spools but the 2500 has only 2 options i think. The original Certate spool and one of their custom spools here
https://daiwafishing.com.au/product-...ustom-project/
Maybe try and find a second hand one here or ebay or similar. I have 2 spare 2500 certate spools but i do use them so will not be parting with them. Good luck with the search.