Hello, does anyone out there have any info or know where I can locate the original air filter assy's for the 289 Cobra dual quad with Carter carbs? I have a compelete original set up except for the air filter's. I believe they had two Stelling & Helling air filter's about 5 or 6 inches in diameter. I'm aware of the larger 8.5 inch reproduction Stellings & Hellings but they are way to large to fit the two Carters. Any help would be greatly appreciated. Thanks