Anywhere to buy panel with Home Button & LS/DP/RS switch?

I’m making a custom fight stick, but so far I haven’t been able to find these panels.
The one with LP/DP/RS, lock/unlock (start & select), the home button, shows what controller # you’re connected as, etc

Is there anywhere I can buy these?

Like from a Mad Catz TE or SE? You’ll have better luck in the Trade Outlet.