Or you could just, you know, save yourself the trouble of finding ancient rare and criminally expensive turbo cards for the 500 and just get a 1200 from Amigakit or Analogic. I spoke to the guy incharge there recently and he said they had about a thousand unsold stock above their offices. Anyway. With a 1200 you have internal IDE for a harddisk straight away, AGA, 3.0/3.1 kickstart and the much more available (though still criminally expensive) accelerator cards.