I got mine in today.
Talked with Dustin over at Z1 Motorsports and he's sending me some washers/spacers so that the Shift knob and shift boot sit flush w/out gaps. I'll updated pics of that later when I get them.
For now, if you've already purchased one, you need to remove the 2 rubber O-rings around the center plastic piece so that engaging in reverse gear will be smooth. Here's a pic:
I'll update post with pics + impressions.