nah there are better downloads then 2005 but if thats what you are interested in then go ahead....the
BEST downloads are:
1. GPXPatch
2. All L02k's Tools: TeamEditor 3.0 , WadUpdater 3.3, GPI Browser 1.2
3. Carset Manager 1.25 Build 21
4. if you cant update GP4 then: MegaPatch 2004, or download GP4 2004 Cars sepeartely.
5. 1988 Mod
6. GP4Tweaker
7. 1994 Mod BETA
8. 2004 Helmet Shapes by Eugenio Faria
plenty of other stuff as well including the 2005 Melbourne thing
which is welladvertised as you can see