If I only lived 800 miles from Matt, I would be loading my car up on a trailer and sending it his way if he says he is available.
This is not a small undertaking and there are only a few people in the world that have experience with this repair.
You can try to source someone locally but two things will happen:
-They will refuse the job as it is an obscure repair on an obscure car
-They weld it together and it still leaks as they are not familiar with the material the block is made out of (very poor aluminum alloy)