I ordered a radiator from a website and they said it was for manual transmission but it has the 2 small plugs at the bottom for the automatic transmission's 2 hoses to plug into it.

I checked on other websites and it just says that my part # is for all Maximas for 2000. Do I need another radiator or will this do?

 

it's fine, everything else will line up.

 

Just leave the trans oil cooler fittings with the caps on them and you'll be fine.....

 

+1