Didius

I recently recovered my trusty old Power Mac G4 MDD (PPC), after installing Mac OS X Tiger and playing around with it I installed Sim City 4 for mac on it. It runs great (with the Rush Hour addon) but I soon run into the traffic problems the default version has. I'm looking to install NAM, but unfortunately the latest NAM for mac doesn't run since my mac OS X is to old or since I'm running this on a native PPC. I've been looking on the web for an older version of NAM which would work in PPC versions of OS X. (I didn't expect the recent versions to work on this old OS) Does anyone know if Nam was even released for these powerpc macs? And would it still be possible to download this?