Carbonmiata are now producing replicas of the front splitter and rear diffuser from a NB SE (mazdaspeed) MX5!

They don't appear to be up on the website yet but you can see the detail from this post over on CR.net.
http://clubroadster.net/vb_forum/115-ca ... k2-nb.html
Strangely they've chosen not to put an exhaust cut-out on the rear diffuser......
Here's a couple of pictures.

