K-48 vs Faital Pro 15 PR 400 C
I think its a win win here. With higher spl, and lower mowing mass weight. Fs is lower. Se data specs. https://www.parts-express.com/faitalpro-15pr400-15-neodymium-professional-woofer-4-ohm--294-1270
Should be bolt on without major changes.
Maybe other speaker elements that are a better replacement than what most people use?
This is just a thought I have😎