hi Ulf, and list.. Mike Laiserin's fiberglass housings are a much cheaper alternative to "correct" metal air cleaners. There are many people putting crossrams on hot rods and other cars that never had them from the factory, and, for them, the fiberglass units will be a great plus. Or for the budget-conscious. The fiberglass units are about half the price of the metal repro units, when sold thru the Club. Yes, I have seen ( and bought) some of John Friberg's repros, and they are indeed superb. The only problem is that they are not currently available. I spoke to John Friberg last week, and he told me that he would once again make some more, but not immediately. When the time comes, I am sure the Club will order another batch of both the round and the ovals. John Friberg is aware of this. John