I just went out and snapped some pics of both spoilers. Will need to wait til I get home tonight to post them. I also took a real quick messurment and it looks like the posts are about 17 inches apart on both the VX and the stealth. This was by all means not a very accurate measurement as it was starting to rain and I was more focused on getting the pics for now.

As far as covering the back window from rain and snow, the stealth spoiler will stick out towards the back further than the VX. The stealth spoiler also feels to be of better quality than the VX, it feels thicker and heavier, it doesn't feel like plastic.

I'll post the pics tonight and see if I can get closer measurements on both of them. That may not happen til tomorrow though.

I think the pics I just took will give you all a better idea of how identical these two spoilers are

I'm sure some modification will be required to actually bolt it up but not much at all. We'll see