SAI manifold fitting

[Mark99GT]

Anyone have the part number for the threaded SAI fitting that screws into the front of the exhaust manifolds? Or know where to get them? I'm not finding anything with Google.

I have a set of stainless steel headers that do not have the SAI ports. I want to install the headers but don't want to delete the SAI. So I was going to have a shop weld bungs to the primaries to and keep the SAI system functional.

 

[ZD302GT]

When doing research to find some caps or have some made I had found that the thread was 1/2" flare. I never got past that and ended up using the welded up tubes i had.