KA24E header question

[edmorl]

Does anyone know what brand or vehicle this header is for ?

I was told its for a single cam KA but the 3 bolt flange for the exhaust throws me off. Maybe a D21 ?

https://i.imgur.com/DL2FiFX.jpg
https://i.imgur.com/OTsvfJ5.jpg

[Silv1401]

No experience with single cams, but it sure looks like the same manifold to head pattern. Maybe they cut and welded a tri flange for their exhaust setup. I mean, the dual flanges are basically guaranteed to start leaking at higher power eventually, anyways, especially if there is still a cat. The trips are much more efficient for sealing higher power exhaust setups.

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