Cowlings

Greetings fellow enthusiasts Happy New Year etc etc. Now I had a cleanup at the hangar yesterday to blow the cobwebs off the Auster project.
I have these two lower engine cowlings but apart from knowing they aren’t for mine (J5F) I’d like to try and find out what they are for. I haven’t looked for part numbers yet but thought someone might know just by their arrangement.
The first is similar to the Gipsy major installations on Austers like mine with the oil cooler duct on the starboard side but the exhaust opening is almost central. Wonder if it might be for a Cirrus Auster? But thought they were almost the same as the Gipsy setup.
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This other one is a strange one. The exhaust outlet is in the right place but the fittings for attaching the other cowlings aren’t familiar and the shape seems wrong as is the alloy strip at the back.
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