I think he is going to replace the neoprene seal top and bottom with the rope type.
Toyvo,
Best gasket makes a seal that is a new product. It is a woven teflon seal and many people are impressed with it. If you want to go NOS, I know of a source if you need one. Many think that the new non asbestos seals are not up to par.
The secret for me in getting a good seal on the crank was to adjust all the main bearings to minimum clearances. Once I did that the new seal worked perfectly. As you probably know a neoprene seal will not work on the old 216.
