Can you give me some more info on where to find these parts or more info on what I can mod? I have an iPod Classic 4th gen. I have replaced the hdd with an aftermarket adapter. I also got a new battery from ifixit and it barely holds a charge for 5 hours. Also the case is pretty scuffed up so i'd like to replace that as well. Do you know when I can find a super battery for this as well as replacement case parts? Are there any upgrades I can do to the screen?
Check out the resources I posted in another comment. I got all the replacement parts from Aliexpress, takes ages but worked just fine. Message the sellers to make sure you get the correct parts for your 4th gen.