I picked up a 56 Del Ray with a stock 265 with an oil bath air cleaner. The previous owner must have had a custom air cleaner on it, and put the original back on when I bought it, when I checked it you could tell it hadn't been used in a long time. I was wandering if anyone here has ever changed the inners out with a K&N dry filter and kept the original housing and what number they found to work.