I have a 64 170 that was running, but tired, when pulled. It is complete, except for carb. You would need to swap your oil pan and pickup to this engine, as we had to use the pan on the replacement engine. The pan on it is a later pan (67 I think). It also has the standard shift crank, and pilot bushing. It has been stored inside. Problem is, I'm in Florida.
A little later but I have a 6cyl & auto in my 68 that you can have if you help me remove it. Might even consider throwing in k member and front suspension. Engine & trans will need rebuilding. Alexandria, LA.