Flywheel differences

I know, I know, flywheels are covered a lot but I just want to be absolutely sure as it could save me some money (and you all know about yorkshiremen and saving tuppence eh :D )
I have a prefacelift CG13 to go into my facelift K11 and from what I remember they both use the 180mm clutch and flywheel which should make for a straightforward fit yes? Now, my query is, am I correct in thinking that although the same size, the facelift CG10 flywheel is actually lighter than the CG13 flywheel or am I mistaken.
If this is the case is there any point in getting the CG13 fly lightened while the engine is out/apart?
Thanks in advance peeps (frank :rolleyes: ) :)

Ade
 
sure, i posted a pic of the area that nissan machined the extra off on the 1.0 ones a while back ade, but you can machine the whole backring off np :)

Hmm. tempting. Would this have any negative effect on drivability or the plans to go boosted in the future?
 
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