The ZorRAM product ID is listed on the product page on our webstore
ZorRAM is compatible with the Cyberstorm but we have only tested 2x cards with it so far..
However, just out of curiosity, we previously tested 4x ZorRAM 256MB installed together with a 4060T accelerator (68060) with 128MB SIMM memory- here is the result:
http://www.amigakit.com/images/4xzorram-4060t.jpg