The science isn’t really that hard.  Toshiba has a 240Gb drive that fits into a former generation 5G iPod’s 160GB drive bay.  Bada bing, bada boom, 240GB iPod.  The price for the new drive will be $295.  DIYer?  You won’t have to send it in, they’ll just send you the drive with these instructions.

Rapid Repair will upgrade the drive for you at no cost, or you can crack open your iPod and install the drive yourself. To help you out, the company has published a guide to replacing the drive on its site. “It’s not very difficult, you just need a reasonable mechanical aptitude,” Mr. Vronko says. “But if, when you were a kid, you took things apart and ended up with a lot of extra pieces when you put it back together, this might not be for you.” Indeed, if the guide makes you queasy, you might want to just send your iPod in for a professional install. The turn-around time should be less than a week, according to Mr. Vronko. Of course this voids your warranty….if you still have one on a two year old iPod.  A really good trick would be a 240GB iPod Touch.  We can dream can’t we? via Gadgetwise