Remove the fans.
You can also remove the radiator to get more room to work.
Follow the procedure in the FSM. And don't forget to turn the crank one full revolution between installing belt 1 and belt 2.
My added steps -
After the initial install of the 2 belts, start the engine, let it run for 5 to 10 seconds. No water pump drive, so don't go longer. Check that the belts are tracking well [not crammed against a guide, or a cover,etc. Repeat the tensioning steps as if you were installing the belts, following the steps [timing in the correct position for each belt, one turn between belts] in the FSM.
Re assemble everything if all is well after this. Then you are good to go.