You're stepping into the realm of the unsupported, so you're at your own risk here. Then you want this page: Only 64-bit drivers are listed but I want 32-bit drivers.
pkg file download Apple has just given me How do I work out which Mac model I have? There are direct download links for Windows 8 and Windows 7, for 32-bit and 64-bit. There are headings for MacBook Pro, MacBook Air, MacBook, iMac, Mac mini and Mac Pro. How to find the correct BootCamp direct download link for your Mac model If you can work out which model of apple you have, you can now get the direct download link from the apple site. Apple have at long last provided not only direct download links for Windows drivers, but also tables of which link you need for each model/year.
