The earlier models have a dummy pully that goes in place - if you want to see if that applies for your year, just look up the belt numbers - if they're the same for w/ and w/o aircon, there's a dummy pully and the belt routing is the same.
The dummy pully can probably be found in a salvage yard, or you can check with various aircon manufacturers (like Four Seasons, for instance) and see if they have one available. You will need the bracket to mount the pully as well.