Just had a pink box exedy clutch fitted to my car which is a 03 sti. All is fine apart from a slight clunk when down shifting fast. ie approach a corner and down shift, when the revs are high there is a clunk, if revs are low it's fine.
It feels and sounds like it coming mid to back of car.

Any ideas?

 

Could be rear axle wind up Dan. Whiteline do an anti tramp kit sometimes called a pineapple kit for about £22.00. which stops that. Easily fitted at home in minutes.

regards David