You can find it here: http://www.warmoth.com/guitar/bodies/unique_choice_bodies.cfm
I've asked about this before, and someone said that these flame maple/walnut/quilt maple tops are made for guitar, and are too short for use on a bass (G4 in my case). There are none available on the bass pages.
Odd, btw, that it's not listed as an option for basses other than P and J basses yet.