bummer ... looks like it was on DP2 (which got wiped before I could capture all that I had documented)
here's a few images of what you'll encounter when you open er up
the bass as it originally came into my shop
the original pickup hole before any mods. as you can see, a Cassady is a true hollow-body (unlike an Artcore which has a solid shaft running down the center core)
for your reference, this is an Artcore cavity routed for Darkstar
homemade routing template firmly in place (shimmed to accommodate the top contour)
the bass as it left my shop
I should note that you'll also need to make a minor modification to the pickguard since the Darkstar is longer (nut to bridge) than the original pickup
I'll also note that you'll need a mounting plate that is flat against the pickup and contoured to match the body. for this Cassady mod, I made one from a scrap piece of Cocobolo I had from a fretboard I made several months earlier. Fred also offers a contoured plate made of plastic - ask him about it if you don't have the tools/skill to make one yourself
all the best,
R