Thats really strange. I have a 73mm c&l MAF meter calibrated for 24 lb injecors for a 89-93 Mustang that is for sale. It is bottlefeds actually. Is there any way you can ask them if that will work because his is cheaper larger and I trust it better than the funky 93 Cobra meter. I would do some research and try to pry out of them the reasoning for the Cobra specific meter. As a last resort I can call some places for you and scrounge one up.