Would it be better to find a junk yard long block, or start with a short block. Then just take all the parts that won't be new off the old engine? The engine will be a 351W, carbed.

 

In the Long run(no pun intended) get the WHOLE engine.
It is usually cheaper this way,plus you will probably have extra parts to sell (to help pay for the project)or have on hand for the future.

Dennis

First Came the Chicken,
Then Came the Egg,
Or Was It the Other Way Around?

78 F-150 429CJ C6 ,Silver w/Explorer Pkge
641/2 Mustang,Pre-World's Fair Car #8092
64 Fairlane S/C waiting for a 390-4spd.
68-Mustang.Sunlit Gold 80,000 miles

 

I have worked this problem over MANY TIMES and you should look at the topics under my name for this answer. In the long run you get the better warranty and shorter hassles from a long block. TRUST ME I investigated this for a few months!