How'do John
I fitted a GT backbox to my 1.8t a tad over 2 years ago - I paid £54 delivered
I wasn't expecting anything special quality wise - I had to get one quick for MOT at the time - it fits the Car well and sounds Good - no drone or excessive noise
the only issue I had - the connection end had not been flared, so I had to buy a coupler
No big deal IMO.
I'm sure it will last another 2 years minimum - so represents Good Value for my Money
Paul.