Recently created some Miata Tee Shirts available here: http://spinnywhoosh.com/tee-shirts/
This one might be a bit to "Stancey" for you guys but I should have some more traditional Miata designs coming soon.
http://i.imgur.com/r61adIMl.jpg
http://i.imgur.com/8XQDg6kl.jpg
http://i.imgur.com/3g6CsnZl.jpg
http://i.imgur.com/guNRr2nl.jpg
http://i.imgur.com/NhhYgv1l.jpg
http://i.imgur.com/wBO6i0wl.jpg