Wanted 1971 GSS Demon six pack air filter

The K&N number is good for the 2.5" height. The advantage of the K&N is that it is flexible. it will conform to an oval shape. Several years ago, I contacted them with the part number and asked if they had the same diameter in a different height. They replied no, but I could order any size and height I'd like. So I ordered 1.25" tall and when it came in, I lost .25" on the top and on the bottom of filter media to rubber. Less than .75" for air flow. That clears my hood, but nothing to run all the time. It seems to me even the Mr.Norms cars had a hood brace cut or modified to clear the air filter.