I am very fortunate to have bought a mega block 20 years ago,,,,paid $2500 Started at 4.310 and resized a few times It's up to 4.385.This has ti out live ME! Funny,everytime a machine shop touches this block they tell me I should go right to 4.5 bore,I tell them"no thanks,just to the next size available ring size...... Last time I hurt a piston,I was able to stay the same size with a light hone.
HEMI-ITIS has no cure. My condition is fully BLOWN!!
Started at 4.310 and resized a few times 
