hello i recently purchaced a lot of and G4 mac book i book parts and i sumed everyiting up and i have enough parts to build 2 fully functional Ibooks i was curious how much i would be able to upgrade one after its complete iv searched and didnt come up with much, one im not sure processor speed of the G4's but someone said i could put up to 1gig of ram and up to a 160 gig harddrive in there, anyone care to comment, i have built and repaired laptops and desktops before this is my first mac that iv sorta purchaced and assembeled