take off the oil filler cap and remove the 3 fasteners on the front and you're good, according to this repair manual i bought at the auto parts store a few days ago. cost me 25 bucks, so it better be right lol

and the V6 camry they used to make this book is also an '04 so i think Gellenole is right its a 3MZ not a 1MZ.
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Lunar Mist 2003 Camry LE 2AZ-FE; 65,400 miles
OEM Spoiler | painted engine cover | plasti-dipped emblems | painted fuse box cover | carbon HVAC controls | blacked out chrome accents | window tint 35% front 20% rear | TRD performance air filter | gen 5.5 SE grille