Hi again , few pics that speak a 1000 words really, hope the sketch makes sense, ...I have included a couple of lights in the roof of mine that operate with the door lights for effect... the screws holes you see in the edge are to grip the cubby in place , not much else to report other than it took ages to hone the shape ... & I used pape- Mache' to help make a template for the back box/ & the amount to cut off the rear ..cut little & often to get there ( you can cut more off , but never nail it back on !) hope all this helps.
, last photo, so the door ajar, looks like the devil's glove Box...lol