May I ask what Your Project Plans are ???
have You considered a used Laptop ?
If they include Sound,
V5 is different (harder?) then the Earlier Versions.
CPU Upgrade Maxes Out around 400 ~ 500 Mhz, Easier with V4 or Later.
V4b & after will have this 2 position Dip switch, under the Memory Hatch
http://yourpage.blazenet.net/starfish/images/pic1.jpg
While You are Waiting for other replies, You could try the SEARCH Function.
or Post What You are Looking for in the "Swap Meet" Forum @ the bottom.
Good Luck ! * StarFish *