heads

Thanks everyone for the info.really haven't decided on heads yet but that being said would prefer alum.over iron only for the weight,if anyone has a set of reasonably priced good heads iron or alum. I could be interested.These will be for my daily driver so I dont want to make it to hairy as it is driven all year +30/-40 winter and summer,if it is any colder I take the wifes escape(much warmer).Interestingly if you take a cup of water outside in the winter and throw the water in the air it will freeze before it hits the ground,so reliability is priority.