curious about valve lash setting/check

Notch needs to face DOWN and to the REAR on the passenger's side and DOWN and to the FRONT on the driver's side.
I apologize, I am not understanding front and rear? the notch is approximately in the correct position for the oil holes to be pointing down. if you face the engine at the front, the notch is 'about' in the 7:30 position on the passenger side, which would put the oil holes in the 6 o'clock position (according to 70's picture. assuming the other in pic (driver's side) in exactly opposite, the notch on the driver's side (still facing from the front bumper), is in the 4:30 position, which should put the oil holes pointing downward, in the 6 o'clock position (approximately, but very close if not). is this correct? or did I explain it wrong again, LOL?