Since I obviously don't have anything better to do this fine day, I sat down and made 94 (!) existing plugins for Apophysis readable for the 64-bit-version of Apophysis 7X (commonly known as 7x64) - I'm talking about almost all of the plugins available as source code on SourceForge.net including my own. I just skipped some odd non-standard ones, those which are built-into Apo7x15 and dc_image. I don't know what else is floating around in outer space so if you note me the source code (*.c), I'd convert some more too.
It cost me an imaginary pack of cigarettes and 90% of my remaining sanity. So here is the download link:
Please make sure you read the file README.TXT before you send me messages and comments whining about that it doesn't work for you