Autopilots Central in Tulsa may be able to assist with factory A/P
https://www.autopilotcentral.com/
Genesys makes Stec 55X has been used many times in 337's
https://genesys-aerosystems.com/site...lp1VvHKegKbGho
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Herb R Harney
1968 337C
Flying the same Skymaster for 47 years
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