What is the difference between a B20B block and rotating assembly and a B20Z's? I know that the Z has a knock sensor and the B20B does not but what else? I need to replace the engine in a 2000 CR-V I have a line on a B20B block and wondering if it will work with all the internals and everything else.The engine in there decided after 214,000 miles to pitch a rod threw the side of the block. I hoping to pick up a block and whatever else it needs and getting it running again.Any info or a line on some parts would be greatly appreciated.Thanks John