Well it's all fitted and working and like others have said the transformation is fantastic. Much more depth and clarity. It took me about 5 hours to fit including an hour to figure out a way of getting the loom into the cabin.
When I bought the car I was tempted to buy the Hi Fi upgrade but didn't think it was worth the money. This upgrade is not only cheaper (if you fit it yourself) but I think sounds much better.
Overall I'm really happy with the transformation.
The downside is I found a puddle of water under the back seats and the seat foam is soaking wet but I think another thread is needed for this.
Miopyk