370Z with LSD doors from Senner Tuning (Germany)
 

http://www.auto-power-girl.com/pics/...r_tuning-58292749 Euro and you have LSD doors. Pretty cheap, i can say. LSD plates are delivered with a part certificate by the German Technical Control Board which ensures that the LSD gull-wing doors fulfil all security standards.
2 pictures here: Nissan 2010 Nissan 370Z LSD doors from Senner Tuning - Nissan cars specifications review

There is already a kit available for $999 from a USA supplier.

please dont.

Reported, Don't advertise your stuff unless you are a supporting vendor. Anyway you should be able to tell my all the fail in the gullwing door thread, we don't want it.