A quick search through one of my parts cabinets turned up an el-cheapo 6-inch diameter air-cleaner assembly I thought I’d use to convert the oil bath to a paper element. I initially thought I’d use the filter’s base – cutting out the floor of the oil-bath housing and welding in the one from the chrome one. However, the paper filter base had a large opening for use with a modern four-barrel like a Holley or Edelbrock, but the Rochester I’d be using had a smaller diameter, so I scrapped that idea. It worked to my advantage, though. I just tossed the small base and set the paper element right on the floor of the large air cleaner, dropped on the small chrome, top and snugged it down using a length of 1/4- 20 all-thread.