Your best bet for locating this tool would be through these avenues:
* Online Auction Sites (eBay, etc.): Search regularly using the part number. Be prepared to be patient and possibly pay a premium for a used tool.
* Online Forums and Communities: Search Pontiac-specific forums or car enthusiast communities. Someone might have one for sale or know where to find one. Mentioning the year and specific engine (e.g., "1966 Pontiac Tempest 215 OHC") will improve your chances.
* Classic Car Parts Suppliers: Contact specialized suppliers of classic car parts. They might have access to NOS (New Old Stock) tools or know of alternative tools that could achieve the same result.
* Tool Collectors: While a long shot, contacting tool collectors specializing in automotive tools might yield results.
* Local Machine Shops: A local machine shop specializing in engine rebuilding might have a tool similar to J 22232-2 or be able to fabricate a replacement.
Important Note: The fact that you need this specific tool suggests a rather specialized timing belt adjustment procedure. Consider whether attempting this without proper knowledge and tools is wise. Incorrect timing belt adjustment can severely damage the engine. You might want to consult a mechanic experienced with classic Pontiac engines to avoid potential issues.