340 Engine Shake

UPDATE:

I met with the machinist today. I have three options:

1. Keep the 340.
- The block will need to be sleeved to re use. $1,200.
- The cam is fine (needs new lifters)
- The crank is fine
- The rods, pistons and rings are fine

2. Find another 340
- All hard parts can be re used
- Machine work and balance
- Cost of a new block?

3. Start over with LA360
- Machinist has block & crank $250
- Rough estimate of machine work and parts (re using my rods) $1,600 (including new flywheel and balancer)

My gut is telling me to start over with a 360, only because finding a 340 would be near impossible at a reasonable price.

Remember this is a slant 6 car originally, so not married to a 340. I can sell my pistons and crank to help offset the cost.