Yo NBT welcome to the site. *Sounds like you are looking for some of the most sought after items around! *Good news for you though - I was able to score a full enclosure AND factory rear bench on THIS site. *
They are few and far between and you have to be REALLY quick on the draw, but there is hope.
If you decide to get custom work done I doubt any of our measurements would do you much good, but that is just a hunch I have. *You could find out more info from a canvas guy.
Best of luck with your new V.
Blue
