[PC/SR]

Whatever you decide, have the balance of the rods checked by your own local machinist after you get the sizes right, unless you can do it yourself. Do Not Not Not accept anyone's statement or promise on specs or sizes, no matter who they are. This is not a knock on the makers or suppliers, but is just acknowledging that mistakes, mis-readings, and errors occur. Also, items made to general specs may or may not fit your application within specs after 90 years of wear and modifications. IE, does the thrust face fit your bearing and provide the proper clearance. (I have too many stories of errors in the specs of parts supplied, even by reputable machinists/suppliers, and I would guess that others here who actually do double check do too.) You can see the problem by the questions here to the very reasonable questions you asked. Measure everything, twice.