Rear swivel seats on 08 van?

[DevonDoris]

Hi, I've been looking through lots of posts about swivel seats but I can't find anything about putting a swivel bench in the back of an 08 van. Has anyone done this before, and can i pick your brains please if you have?

My van used to be for work, but it's time for her to become an adventurer instead! Any help would be brill. Thanks!