Need help identifyin part(part of thermo housing)

[RalliartRsX]

When doing the thermostat today, I went to replace the L neck and the right bolt decided to become unthreaded (as in, when I removed the bolt, there were wire like pieces of metal wrapped around the bolt's thread). Now, its the piece which attaches the L neck to the block and house the thermostat. Here is a picture of it

But only its for a KAD engine.


Anyways, here is also a real pictures to show you guys what I am talking about





So what happens then is that the housing doesnt sit 100percent true and it leaks. I even used a silicon gasket to help seal and nothing. Do you know what the parts called and where I can get it?? I was thinking junkyard, but, I reather buy something this important brand new.

Thanks