If you mean new ‘four barrel’intakes, then there are two aluminum intakes currently available. One is the Mummert and the other is the BlueThunder. From a factory offering standpoint, then the oem ECZ-B iron four barrel intake that was in production from 1957 thru 1964 is a decent performer. While the ECZ-B intake was found on the 1957 Fords and late Fifties Mercs, many of the big trucks had this intake thru 1964.