Les,
Respectfully, that part does not appear correct for my head. My metric head appears to have a thread pitch darn close to a metric 1.0 pitch but I can't be sure since I don't have a metric bolt that big with a pitch that fine.
The adapter that I showed in my pictures was what came out of my head but was forced and cross threaded and definitely not correct.
What size and thread is the coolant temp port for the later model metric heads?
What do the shops do when putting a later model head on an early 2.25 engine and using an original mechanical multi-gauge?
Thanks
Bob Kopicki
Massillon Oh
64 SIIa 88
72 Newell Motorcoach