Is this a G40 or GT manifold!?

[GR40]

So I found this manifold on sale from an old guy that claims it came of a n/a car! He is old so he doesn't remember the details. So I gave him a call and asked him about the serial number on it. It reads 030 129 713D. If I am correct this is a G40 inlet isn't it?

Picks 9 and 11 on this link:
http://www.car.gr/classifieds/cars/photos/3249812/

[Jezza-7]

030 129 713 D is a G40 inlet manifold

a GT one is 030 129 713 B

[GR40]

Thanks a lot!