K27 Boost Signal port sizing and thread

[9mil]

I am trying to find a nipple or adapter to get a nipple attached to the boost pressure signal port located on the housing of the cold side of the K27.
I could swear I found it to be M12 - but cant seem to verify that with my research.
Anyone else either plugged it (and used the manifold vacuum ports or found a nipple solution that worked?

Thanks!

[9mil]

The only things I have found are fuel related and overseas- but if it is M12x 1.5 - that might work....

http://www.aliexpress.com/item/For-Bosc ... 62077.html