Before you go into full panic mode, take the block to a machinist that is actually a machinist this time to measure the bores for taper and out of round. You might be able to just have it honed (properly this time) and reringed. After all it only has 8000 miles from new.
Hemi blocks or any others for that matter seem to be made of unobtanium so you don't want to use up the one you have any quicker than necessary.
