It seems as though Burl's Aircraft has a 180hp STC for the Aeronca Sedan that calls out the McCauley 1A-200-DFA-8244 prop as suggested. However, none of the O-360-Cs are on the list.
http://www.burlac.com/hp_conversion.html
But because I'm a Googling idiot, I led myself down this rabbit hole:
https://www.lycoming.com/sites/default/ ... ngines.pdf
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O-360-C4F : 180 2700 100/100LL 8.50:1 : Same as –C1F except has solid crankshaft and no provision for prop. governor
O-360-C1F : 180 2700 100/100LL 8.50:1 : Same as –A1G with conical mounts and Slick Magnetos
O-360-A1G : 180 2700 100/100LL 8.50:1 : Similar to –A1F but has horizontal carburetor and induction housing
O-360-A1F : 180 2700 100/100LL 8.50:1 : Same as –A1A with -1200 series Magnetos
O-360-A1A : 180 2700 100/100LL 8.50:1 : Dynafocal mounts