They had left over blocks for the T/A Challenger and AAR Cudas. The plan was to go racing in 1971 but the program got scrapped. It's not uncommon to find these blocks in some late 1970 and early 1971 340 applications. Cody, what I don't want, because it's going to be to expensive to repair, I'm returning to the fellow I got them from with a refund. I'll be happy to pass on the information once I've completed my transaction. I got the word fron the machine shop today that the best one may need a sleeve.
Cody, If your handy with a nickel welding rod maybe you can fix this bad boy.