[X4U] Can a G4 go to Leopard?

[Crandon David]

Hi Everyone,

Legalities aside, can a G4 (whose installation disks I've lost) be  
updated to Leopard with the disks that come with a new Mac that has  
Leopard already installed?

Or, perhaps with the Leopard update disks that people can get if they  
purchased their Macs last month?

Thanks,

David