I recently cut the rear roof section off of my VX. The plan is to leave the roof open (maaaaaaaybe have a soft top made in the future, but likely not) and have bedliner sprayed in the rear section. I'm planning to add more pictures as I go along. Here's the before:
At this point, I've cut the rear off and started to clean up the cuts a bit. I removed the rear windows (miraculously without breaking them) and cut along the seam in which the window was seated. I will clean up all 4 cuts, then weld sheet metal over the holes. I'll have the bedliner sprayed up and over the new metal, like how some folks spray up and over the bed on their trucks. I will also remove the rear door and replace it with a tube tail gate swing out tire carrier using the original hinges and latch.