Obviously I got them from B&R but I don't know what they are. I think everything here is for a water line to my GT3076r but just guessing. If that one is correct for my Koyo radiator drain, it has to be welded to it? I didn't remember having to weld.

 

The bung is tapped probably for 3/8 npt.

you can easily get a npt to jic fitting. Would be the smarter thing to do instead of cut and weld that bung.

 

The rest looks like the cartridge fittings and the coolant drain fitting at the block