87-88 Mk3 Spoiler Dimensions
 

Hey everyone I hope I can get some help here. I own a 1988 Z31 and have been looking for a certain type of spoiler that I saw on a couple of the Z31's in Japan. I've narrowed it down to about 80% sure it's a JDM Mk3 spoiler from the 87-88 models which are the same as the USDM version just minus the 3rd brake light. If any of you can help clarify this that'd be great. Here's a pic of what I'm talking about.
http://www.ucatv.ne.jp/~tokonatu/z31-ssr-2.jpg
http://www.ucatv.ne.jp/~tokonatu/z31-te37-18.jpg
http://www.ucatv.ne.jp/~tokonatu/z31-te37b.jpg
http://www.z31club.com/event/pics/event12-3.jpg

Also if it is I was wondering if anyone had better pics of the spoiler, basic dimensions, , what are they made of (fiberglass, foam or something else) and if they know of any for sale. USDM version or JDM version is insignificant being as they're basically the same. Thanks for the help.