It has been confirmed by users that Final Cut 7, Motion and all do indeed work perfectly on a 2ghz or greater G5.
By simply using “pacifist” to install the application – bypassing Apple’s hardware check allows the
software to install.
They all run without hitch once installed. It’s another case that Apple is artificially locking out systems – one can only assume so users have to upgrade. Much like the fact SnowLeopard will not run in 64bit on MacPro 1.1 🙁