Additional Information:
D.SIDE HAS FILLER HOLE FOR TWIST IN CAP, P.SIDE IS BLANK. THESE ARE VALVE COVERS ONLY. FOR GASKETS USE N222CD AND FOR BOLTS USE N222C. ***WARNING: THESE COVERS WILL NOT WORK ON 1967 AND LATER ENGINES WITHOUT USING SPACERS.**QUALITY IS EXCELLENT IF USING ROLLER ROCKERS USE N222Y SPACER FOR CLEARENCE