Audio Specialists in Manchester Area anyone?

[braddy]

I'm looking to upgrade the sound system in my car. I want to change the head unit, speakers and get a sub fitted in gap in back seat.
Does anyone know anywhere in the Manchester/Lancs area that they would trust to do the work. I'm fairly new to Cerbera ownership but if the wiring is of the expected TVR standard then I'm thinking it may not be as straight forward as fitting a system in a different make of car! I didn't just want to go to the Adio place in Bolton (even though I know they can make a subaru sound noisier than a nuclear bomb going off)

Any help would be appreciated.

Cheers