what rear bumper is this?
 

Here is a thread on the kit

https://www.rx8club.com/series-ii-ex...dy-kit-227628/

There is a big hint for you in this pic ;)

http://img526.imageshack.us/img526/5...1728231199.jpg

That looks bad ass...and looks expensive too.

Only thing I'm not a fan of is the vent in the rear wheel and angle of the rear wheel well

The AB Flug rear is similar and I like that better.

http://www.streetandcircuit-shop.biz...d-diffuser.jpg