Only one machine shop around that could handle the D342, and they are not cheap, but they are the best. Anyways, starting at $5K to have the block welded and line bored, another $2k to have it milled and counter bores cut. More if they run into problems. They will not weld the crank as they say it takes the hardness out, but grinding should clean it up - have another shop that can do that for a more reasonable $400.
Anyways, I am looking at $7500+ to get the block and crank fixed. I haven't even called Cat to get a price on a complete rebuild kit and pair of reman heads, but I am going to guess at least $15K. Add a few little parts and I am figuring on $25K to $30K to get it done the right way. If I had a need for another D8, that would be a good option, but I don't really need two...
Or, I can take a cheap Big Cam and 13 speed and a can of welding rod and have it running for much less than $10k.
My biggest concern is how to make the transmission oiling system work without the torque divider. I can easily handle the rest.