A friend of mine is at my garage putting a 440 in his Roadrunner today.We took his good running 383 out of it and hes giving it to me .I was happy to see that the driverside block has the holes already for the front engine mount.My question is .did some b body blocks come with them from the factory?meaning the holes already in the block!This is a 2468130 block dated 12/19/69 rm23h9c198514.. what is the block number for a 69 A body 383?