If you want to try just replacing the two bad displays with LED & leaving the rest as plasma, I have two styles of displays that should blend in with your current plasma displays..
https://www.pinitech.com/products/ballystern_display_traditional.php
https://www.pinitech.com/products/ballystern_display_uno.php
If you'd like single displays as DIY Kits send me a PM or email. Currently only have DIY Kits available for full sets on the website.