Surely you’re all aware that this LEGO Ideas project (a) exists, (b) hit 10,000 supporters recently, (c) will be reviewed this fall, and (d) has a decent shot, since LEGO already has licensed the Ghostbusters Ecto-1, right?
https://ideas.lego.com/projects/60632/official_comments
Not saying don’t build your own, Joe – if it becomes a set, it might not come out for a while yet, and even when it does, we’re better off displaying a custom version than what would then be a stock set!