1960 aluminum heads

[Rex T.]

Does anyone know...... or are there any records that define how many sets of aluminum heads were produced for the 1960 Corvettes? I know it is well documented that none were installed on assembly line cars so I don't want to open that can of worms. I also know the failure rate was high due to porosity issues with the casting process, but apparently there were a few sets that made it into customers' hands and were successfully installed on their engines. I am actually looking for a set myself to use on a display engine.

Thanks in advance for your help and comments.

Rex