We used Hedman Standard Duty Black MAXX Ceramic-Metallic Coated Mid-Length Headers on a SBC 355 with Vortec Heads. Collector connections are kept high as we did not want the exhaust to hang low.
I pulled the valve cover with the breather and removed the internal baffle that was held in place with screws. Then I inserted a new breather grommet with a built-in baffle for the breather. When I need to add oil I pull both the breather and its grommet.