Don't forget to stop at Sears and buy a 32mm wrench. It's the only thing you can use to get the fan nut off.
Get the Behr from autohaus.az.....free shipping and exact fit. As mentioned above, do all the hoses, waterpump, thermostat, themostat housing,(get the aluminium one) belts and idlers while you are in there because they will be failing soon as well.