To be honest I was not sure what else was required and planned to talk to my IA next week. Now I know and will get him to complete the process with a 337 and logbook entry.
Going up to see him is also another excuse to go flying so this will work out fine,
I recommend your IA complete a new 337 with wording such as : "Found Installed, O-300-B in accordance with STC Number, Int'l Cessna 170 Assn."
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention. An originality nut (mostly) for the right reasons.
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