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
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 *