valve cover mods

have low budget 360 in a vintage coupe for 3/8 ovals running 10 lap heats and 25 lap features..have KEVCO oil pan and pickup..what is the best way to vent valve covers? Is it neccessary to run a drain line from the rear of the right valve cover to the left side of the pan as shown in the mopar oval track book or will simply two breathers on the left valve cover be ok? this is a basically stock 78 360 with 340 cam, holley streetmaster intake with 650 holley 56-5800 rpm for short races...sugestions?
Author: dirth57