Faster processor for PB G4 867 MHz?

[lambing]

I have a PowerBook G4 867 MHz - I'd like to install a faster processor.
Anyone know if this is possible, and if so, where they are available? My trusted source (OWC) doesn't even list my model of PowerBook.

 

[mad jew]

Not really, sorry. It's soldered onto the logic board, from memory.

 

[iW00t]

Not worth the trouble, might as well just sell it on eBay and buy a used macbook.