I have played around with various ways of getting more capacity in the iPod classic range - the best way i have found is a £4 ZIF to mSata adapter from eBay and then buy a mSata drive of required size. I have tried ZIF to CF with a adapter which works but is pricey. I also tried ZIF to CF adapter to SD.... this has several areas of failure and needs a larger back case... Before buying a large capacity drive its always best to check that the generation iPod you are building can handle the large capacity