You might try Rig Rite - http://www.rigrite.com/ - they list scheafer 7/8" cars on their website. Definitely call, they are a weird company but they have deep backstock of old rigging parts.

cheers, jason

:: I am in need of Jib/Genoa side cars for my 67' 22. The
:: tracks are Schaefer Marine 7/8" that they do not make
:: anymore. I would like to try and get the cars v. new
:: tracks so forth. Please let me know if you have any!
::
:: Thanks Cami