I have restored Bosch cast iron distributors in stock. These include the VJ4BR9, VJ4BR18 and 0231 129 022.
These are genuine German made Bosch cast iron. The same one that was in your car when it left the factory. Everyone is rebuilt by me using genuine Bosch parts and tested on my calibrated Sun 600 Distributor Tester.
Please check my website
http://www.glenn-ring.com/bosch for pricing and availability.
I can also rebuild your core. Email me for details at
glenn@glenn-ring.com