I have not used the zorro hack.
However, slingshot and slingshot pro were 86 pin a500 expansion port to 100 pin zorro II adapter.
the pro has a 86 pin passthru and one logic chip.
I believe they were basically the same thing as the zorro hack.
I have a slingshot pro. It works well.
Either way, You will need a big power supply. I used the XT power supply hack. you don't have to worry about the 5 volt switch signal for the ATX power supply.