I did some research way back when and I didn't find they officially went out of business but instead possibly unofficially ceased at least some operations to fight a legal battle for copy right infringement. I didn't find anything else or even persue anything more than that as it satisfied what I was looking for at the time.
That said it seems they have a good product on the market right now. I use the Napa Gold Paper filters because I get a good deal on those locally. I also use the Moroso Top and Bottom with a 2" filter spacer to help the air straighten out some before entering the carburetor.
I just watched an old engine masters testing air filters the straighter they made the air entering the carpet the more HP they made .they even took a salad bowl and made an air cleaner pretty interesting.
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