No, they were only used in the 4x4/Escos, the actual reason for it's use was due to the transmission stress from the 4x4 drive train.
I can't remember the exact way to tell but there are differences, for a start the block is heavier (Not that that would help you)
The way to tell it apart if to do with the position of an oil gallery, which differs from 205 blocks, I seem to remember there is also more "meat" near the bottom, hence why these can be 'long studded' and 205 blocks can't.
It should also have YBG/YBT/YBP etc stamped on the front of the block, followed by some digits.
Martin