I build my own OSx86 distros. Bought a copy of Leopard and used a special bootloader CD images called boot123 to be able to boot the retail copy of Leopard then install and install Chameleon and the Voodoo XNU kernel.

When it's time to install it onto my laptop I'll have to build the distro on my current hackintosh and just do trial and error until I get a fully stable system. In other words take out the drive and toss it into a external enclosure then boot via USB, get it working then slap it back into the laptop.