Flywheel Weight Difference?

[Vili 18]

My S16 clutch needs chancing. I have two questions before I start.

I was wondering if XU9J4 flywheel would be any lighter than XU10J4, as it would be easy swap when gearbox is out anyways. Has anyone weighted S16 flywheel? 1.9mi16 is something around 6,8kg

The second question is of course does XU10J4 clutch fit the 1.9mi16 flywheel?

[boombang 2]

I believe they are identical. Certainly have been on engine's I've worked on.

[28CRAIG 2]

Xu7 is lighter

[welshpug 1,661]

smaller clutch though, not that its a major issue.