Some people put on fans from other vehicles, used style. If you search the forums you will find what they have used. Quadratec and others sell new kits as well. Electric Fan is a great upgrade as you get constant air flow, a real plus if you are rock crawling or running at slow speeds. Puller VS Push is one will pull air through your radiator and the other will Push the air out. I am not sure if one or the other is better, I would think you would want to pull cool air through the radiator though.