I put Ford Racing aluminum pullies on mine before storing the car... no heating issues at all. I must say that the stock alternator doesn't like it. With the electric fan on, heater, and lights I need to keep my RPM over 1200 at lights as to not kill my battery. I knew about this problem so I vowed to not install it until I put the 3G alternator on, or wait until the very last week I have the car on the road... Worth the mod, they look nicer than stock and there is a little difference, at least that's what I think...