Help Me Identify My Os Giken Clutch

[T88 ON BOARD]

Hey All,

A while back i purchased a Tripple Plate OS GIKEN Clutch For my r33 gtr.

I had it installed and everything worked fine.

Although, When i installed my GREDDY 6 Speed dogbox A weird noise from the clutch would occur. Sort of like a deep sounding grinding noise (NOT THE GEARBOX)

We pulled out the box and after inspection it came back to the clutch not lining up????

I was told the clutch may have not been for a gtr r33 (as i bought it from the japan auctions)

How can i identify which car the Os Giken tripple plate suits? as there are no serial numbers on the clutch.

What can i measure up etc etc

Any Ideas?

Tony