@Anderson,

As noted, you can source the Edge blank plates through your Surpa dealer. Or, if you refer to this very thread, there are some custom aftermarket options.

Have you contacted JL to see about a swivel mount option that will work with their pro edge plates?

The Wet Sounds X-Mount and TC3-S pods will bolt right up the plates shown in this thread. These plates are in stock.

Roswell offers an adapter for thier pods, that seems to have the common direct-mount bolt patter. So they should bolt right to the plates shown in this thread. You may get lucky, and be able to source all of this through one location.