hemi block questions

i cant find the info im looking for. im looking to buy a cast 426 hemi block but refuse to pay the ridiculous prices out there for a 66-71 block. people want over 3 grand with blocks that are windowed. my question is which mopar performance blocks are good? From what i hear the ones made by world products are junk. another thing i heard when mp first started recasting blocks cummins was doing the casting. is this true? does anyone know part numbers of the good blocks to get? Im planning on over 500 inches and it will be blown so want a good block. i have a line on a nice keith black aluminum water block that is gonna be my fall back plan if i cant find a good cast block for a decent amount.
Author: blown71cuda