what des it take to stroke a 360 to 408?

I know he took it all apart because when the cam went bad we found out that the pistons were too small cause the block was a used .30 over with a hone job instead of a fresh .30 over. so i had a whole new block done and a new cam put in. I hate the fact that i chose to go with getting a block built when originally i was planning on buying the 408 stroker from blueprint engines. it was 3699.00 and i have about 4000.00 into my motor having to redo another block.