@Bogger - to help you out (hopefully not confuse you more) my 460 stick measures way high with 6qts in it. My Hardin manual tells me it's a 6qt capacity engine and I have an old tech bulletin #78-5 that tells me early 1977 models had 5qt dip stick with a 6qt capacity, my boat is a 77. See photos and reference last sentence in last photo of tech bulletin. Engine model is H320 in case the highlight doesn't stand out.