Just curious if you knew what year the oil filler cap moved from the crankcase breather tube to the front of the valve cover. I have a breather tube with oil cap, but the engine it was on also had a fill cap on the valve cover. The engine was out of a 46 truck, but was actually a '50 block and head. Looks like the valve cover in front has a flat spot for the fill cap, but not punched out.
