Dang, as much as I understand the look thing, does look great, it is something I would never do myself. It may impress most but those really in the know of true performance will wonder what is wrong with you for doing this
If you really want it right, put them in the front, lol!
In the back, purely show, nothing to do with real go, pure show cars can do what they wish and I suppose they should to get attention as that is why they are built.
Now my real feelings: If I ever convert to FWD I may contemplate wider rear wheels but still doubt I could justify doin this, if I went RWD then sure, would do it in a heartbeat.
Rick