I googled like a madman this weekend trying to find these on another Z and couldn't, but there are a ton with EC-7's which are very similar
Re: JWL, I had to look this up as I'm not a wheel guy. Eddy from Apex provides an eye-opening description of certs in this thread
http://www.m3post.com/forums/showthread.php?t=596608
Not sure how to tell if any company has "met the requirements" or actually met the requirements... I guess I could reach out to each rep and ask for proof, but from what he's saying some companies fake that too? FWIW, VMR says they're JWL/TUV/etc certified