I have several modern (post-1972) Sunfish rudder assemblies for sale and I too am in Central, NY (20 min. s.e. of Syracuse.) Do you need the complete assembly (rudder blade, rudder head and hardware, tiller and tiller extension) or just some of these components. E-mail me directly at: firstname.lastname@example.org, let me know what you need and I can reply with photos and prices.
Where are you located? If you are close, you can drop by and see the stuff in person.
Are you still looking for a modern Sunfish rudder assembly? I have several for sale here in Central NY (Cazenovia, near Syracuse). E-mail me directly at: email@example.com if you are interested. Thanks.