[TerrysSPF]

RED: K&N makes a filter that fits the Stelling & Hellings air cleaners (it's 8.25" diameter / 2" tall). It does raise the height of the cleaner about a 1/2 inch......but that usually isn't a problem. Check out Finish Line: cobraaccessories.com ....I think they're $55.00. It is said to increases the air flow about 30% over "regular" air cleaners. I would think it is better yet (maybe 40-50%) over the stock S&H elements and perforated band.