I did eventually realize that ... I put the old Flywheel on and as you say, it will only fit one way .... I still have a problem with the new one though ... it won't fit even after trying all the possible variations .... looks like I have a problem with the new Flywheel ..
Also, How does the Crank Sensor work with the new Flywheel ... it is much further from it... and I could shim it, but there does not appear to be any 'Trigger' to activate it..
Thanks for any help!!