Help Im having gearBox Crysis

[Tilly819]

Help Im having a Gear box Cyrsis

Hi all Im Having a very concerning crysis

Iv got the car up on the stands at the moment and have just been doing abit of testing and basicly when i let the clutch out to engage drive it really nice comes up to the bite, wheels start turning etc etc then once the cluch is about halft the 3 quarteres out i get a horrible grinding, clunking noise from the gear box,

Engine is a 2002 honda super blackbird.

Any ideas, i have a feeling its quite serious hoping its something to do with the clutch rather than the gear box itself, unfortunetly i now very little about gear boxes.???

Thanks Tilly