Sorry, haven't updated this thread. As luck would have it, I found a 69 340 local to me std bore for $100. It was just the block (no caps).
I took it to the machine shop, with my old caps, to see if he could fit them on to the new block.
He hot tanked the block, magnaflexed it, sonic checked it and it all turned out to be good.
He was able to machine the caps and line hone them no problem. So I'll just need a .005 under timing chain.
He is going to move forward with my rotating assembly in the new block.