If you have PCV, you'll want to seal the dipstick where it goes in. Using a piece of 1/4" brass tube, a brazing rod, a penny and a couple of o-rings, I made this dipstick and drilled 2 holes. One with 4 quarts in the pan and one with 5 quarts in the pan (spin-on filter which doesn't drain down).

https://beta.photobucket.com/u/JonGoodman/p/46f8cb55-e656-4fe4-b920-fea37cedfce1


~ Jon
1952 1/2 ton with 1959 235 | T5 with 3.07 rear end