Why do you doubt this?-----There is no cylinder head that you can remove !!-----Pistons go into a blind hole from the other end.-----The block and the dome with the plugs are ALUMINUM.----Cast iron sleeves are inserted in the cylinders.
These newer inlines use " cracked rods " and no need for fancy ring compressors.---Remove and install pistons one at a time.-----Flywheel and hub are easy to remove.----Careful / take time to get rod caps installed correctly.----They only go one way.