Hi @rickdimitroff
Search online for [https://www.google.com/search?client=firefox-b-d&q=JBL+LE25+recone+kit|JBL LE25 recone kit] to find suppliers that suit you best.
Here's a [https://reconingspeakers.com/products-page/jbl-le25-aftermarket-recone-kit/|link] that shows what the kit contains
Here are the [https://schematicsforfree.com/files/Audio/Products/Consumer/H-I-J/JBL/Jbl%20Speaker%20L26%20Decade.PDF|specifications] that may also help