Dip Stick and Tube
A hard to find part to complete your 292, will also work with 230-250, you will need to add you own oil level marks (easy to do). Simply fill your engine with the normal fill of oil minus 1 quart. Insert dipstick and use that level to mark the LOW. Same process for the full. Just add 1 quart and mark FULL.
Keep in mind if putting on a fresh oil filter at same time. The oil filter normally holds 1 quart.
Put a thin coat of ultra black rtv on outside tip.
Get a 5/16 bolt and put inside of tube at top .
Drive in lightly with a hammer to the paint line