Was thinking on putting a trans cooler fan on my factory trans cooler. But trying to find one thats about 4.5" is hard. Is it worth it. A new trans cooler is like $400 or i could go universal but i dont wanna go threw the hassel on fittings. So i was thinkin of putting a fan on the factory trans cooler. Is it worth it? Anyone know who i could call to try a get a fan that small? Opinions welcome.