Thats a great price for twin turbo setup! gona check my account too!
But fitting is a problem..Envy are in Northumberland.. couldn't be any further from london thats about 7 hrs drive!!
So. Buy it from Envy & get it fitted locally.
Or make the trip to Envy or Phil. Its well worth the effort, Phils services is second to none. I wouldnt think twice about driving up to get it done there. When you are forking out a fair few grand, spending a bit more on getting up there is nothing. I'm sure Phil could arrange a lift to the airport if you leave it with him for a week, flights cost bugger all these days. Leave it a week and fly back to collect it
What I would be more worried about is getting someone local down here to sercvice it.
And we supply a courtesy car