Awww crud - mystery heads, can anyone help identify these? Options

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So I pulled the turbo intake and single Weber off the red car yesterday, that was discussed here Removing turbo set up

I went to put the dual Weber’s back on and there is no way it will bolt up. The bolt holes and spacing don’t line up. Looks like the heads on there have a significantly larger intake port and bolt spacing is different.

Blue is what I took off.

Red is standard 2.0 intake.

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Never head of Okrasa before, interesting.

It's a Type 4 2.0 case, but heads are different (obviously).

There was some discussion of this earlie - @McMark thinks they may be aircraft heads.

Prior discussion of these heads

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Never head of Okrasa before, interesting.

It's a Type 4 2.0 case, but heads are different (obviously).

There was some discussion of this earlie - @McMark thinks they may be aircraft heads.

Prior discussion of these heads

They aren't Lycoming or Continental heads. AC heads and cylinders are one piece, Each cylinder needs to float independently of the one next to it because of extreme temp fluctuations. It the AC engine had heads like our T4's the cylinder would crack. Even the baffles (tins to a type 4) have slotted screw holes, in places, to allow for cylinder movement. (IMG:style_emoticons/default/beerchug.gif)