iPod 4g HD upgrade from 1.8 ziff to flash memory

[popper]

Got this idea while wandering about on e-bay and I found this (note: I know absolutely nothing at all of this person or product):

Apple iPod photo classic 4th Generation (32 GB)>Modified & UPGRADED Flash Drive
http://www.ebay.com/itm/Apple-iPod-photo-classic-4th-Generation-32-GB-Modified-UPGRADED-Flash-Drive-/271281547645

Am wondering if others have swapped out the Ziff with flash memory and Rockboxed it. Just found these useful links.

How to replace an iPod 4th Gen hard drive with a Compact Flash Card
http://www.thepodfixer.com/4thgen/4thCompactFlash

Replace a Dead iPod Hard Drive with a Compact Flash Card
http://lifehacker.com/5643878/replace-a-dead-ipod-hard-drive-with-a-compact-flash-card

How to Convert an iPod Hard Drive to Compact Flash
http://www.apartmenttherapy.com/how-to-convert-an-ipod-hard-dr-127584

Convert your 4th Gen iPod to use Flash Memory
http://www.instructables.com/id/Convert-your-4th-Gen-iPod-to-use-Flash-Memory/

If this is possible, as I now suspect it is, I'd be thrilled. As far as I am concerned, the weakness of the 4g is that darm Ziff drive.




--Popper