BillsBird, before you spend money on the adapter find a long old flat tip you have just laying around, long enough to reach down the dis shaft, then break the handle off and use that. Cheaper and works just as well as the "special" adapter they sell. Also you can always sleave the cylinders, if done right its just as good as a brand new block. Most people here will argue with me on this but my ex father in law did that on his 76 Caddy and a friend did it to his 427 for a 34 ford, both have been driven lots of miles and the 427 has been driven hard and they are still running without a problem.
Just somethings to look into before you scrap it if its bad.