Manual should tell you how much as well. Prestone, Peak, shoould be fine. Just check and see if it is compatable with aluminum. I think most are. One note, I would stay away from the orange stuff for the chevys. I wouldnt even use it in a chevy. I have seen too many bow ties with antifreeze that basically looks like mud. I dont know why or how but I dont think its good antifreze.
My 04 manual (in pdf format) says:
2.3 inline 4cy with manual trans
10L (10.5 QT)
2.3 inline 4cy with auto
But at the same time, I dont think I got 3 gallons in mine when I changed it. I will have to check it on monday.
I have the 04 manual in an e-mail-able form. If you or anybody else wants it. Its on line somewhere but I dont remember where i got it. shagmail@yahoo and I will send it, to anybody.