The pix above, an outboard and three unlimiteds, are one of Ron Anderson's Anzanis on Don's DeSilva, a Merlin, and two Allisons.
Jeff, the difference in the mounting brackets of the megaphones on the two Anzanis you show tells me that the first is a Seattle-style engine (I think Sutter came up with those brackets in the early '60s) and the second is a Tenny-style motor.
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