I've got a mk4 S reg 1.6 16v astra CD, its done 120,000 mls. Today I pulled up at my m8ts house and heard the the gearbox/clutch knocking when the cluch is released (not pressed down), it also whines a little in first and second gear (after this its not really noticable).

I think its the input shaft bearings (or bearings of some type), but was wondering if anyone has had the same problem and what it was.

Also does anyone know how much they are?