i dont really want an na motor would rather go boosted.your point about the pistons is a good one,if they could be made they would be really exspensive.on one hand i'd love to keep this head and make a go of it but on the other it might cost me more time and money than i have and the end result may be a head that wont last long.i supose if its still mine at the end of the week ill make a go of it and hope for the best.i appreciate the info any more options or ideas would be appreciated