Hi Steve, Also please be certain to check the surface of the crankshaft where it will contact the rope seal. Often that is corroded, pitted, etc. Moisture is harbored naturally by this type of seal and also so are acids, etc present in the oil. If it shows deep or large pits, you may want to also install a Speedi-Sleeve over it to restore the original smooth surface. But please note: The Speedi-Sleeve will add some extra size to the crank sealing area so you may need to study that to see if you have enough clearance. I can promise you if you replace the seal and your crank sealing surface looks like the image I've attached the new seal will fail...maybe rapidly. Good luck!
~ Jon 1952 1/2 ton with 1959 235 | T5 with 3.07 rear end
