Lightened flywheel and crank pulley

[cully]

i couldn't get out of him the difference in the two
other than

There's no way to tell them apart really - the ring gear are the same size, although the offset is different

i found out
early ones EN8D grade steel have smaller ring gear
later EN19T chromoly steel have a larger ringear

i was trying to work out if the one i bought was an early or later
anyone else shed andy light on the differances

i believe the timming mark teeth are cut square on one and have a triangle airspace profile on the other but i bont know on the version for each