I found Peak 3.2 and Deck 3.5 in DAW - Host Applications Downloads, but NOT Peak 6, so I can't check to see if it included BIAS Authorization Manager 2.1.2.
I have a working version of Peak Pro 6.2.0.21985 working on a G4 PPC. The Authorization Manager allows creation of the enabling file X_BIAS Peak Pro 6, which needs to be in Library/Application Support/BIAS/Licenses.
This file may be moved from one hard drive to another, and it will still work, BUT it is computer specific! A working Peak on one computer will NOT work if the hard drive it is on is installed in a different computer. I can run Peak 6 from an external FW hard drive, but only on the single computer that matches the X_BIAS Peak Pro 6 file.
The X_BIAS Peak Pro 6 file is easily readable by TextWrangler. It seems to contain an encrypted version of a serial number, an e-mail address and machine identifier.
Kracking the Authorization Manager rather than the Peak application may be another approach that would work. I do wish I could move the license to a different computer.