Cast iron siamesed 440 blocks were available from Chrysler in the mid 90s.
Cept nobody said anything about MP blocks.
Last time we looked,MP stood for Mopar Performance a division of Chrysler Corp.factory engineered performance parts with Mopar logo,casting numbers and part numbers.We consider those blocks to be factory parts.We understand that they were not available in production built cars,but so was a lot of parts that could be bought across the counter just like any replacement blocks.
