Limey.... '62 had a dual clutch/brake cylinder set-up. '63 and on for many years use a lever set-up. No cables on Chevy trucks for clutches for many years that I know of.
Do you have one on your '64?
As for the throw-out bearing... if it's not making too much noise you'll get time out of it.. but probably not thousands of miles. Leave the motor in as mentioned.. the tranny is much lighter and easier to remove and replace. It's always best to replace all clutch parts together, but if everything else is in good shape, if you are on a budget, or you don't mind hauling out the tranny... replace just what's needed for now.
