oil dipstick slant six

You'll need to post the length of your dip stick tube to match it with the stick. Your dipstick is missing or clipped off? If the tube is bent at the wrong angle, the crankshaft will hit the dip stick and break it off. That would have to be corrected or your new stick will get broken too. I pulled engine apart years ago that had 8 broken off ends laying in the bottom of the oil pan!