Well back on topic I saw the airtec inlets at ford fair and I closely inspected them after reading this post and I can confirm 100% there is NO internal difference in finish it design between the 2 so all the people thinking there is your very confused as I have a hart fitted and had plenty of pics of it and the airtec was exactly the same..... so that puts that to bed the only difference is the price which if they can sell them for 350 go for it. Business is business.