Just bought a double din head unit, I'm guessing i will need a fascia? Its a sony 601bt, can't find the dimensions but if someone could help i would appreciate it. Im hoping i don't as they can sometimes spoil the look slightly
This is what you need. http://www.caraudiodirect.co.uk/install-adaptors/renault/megane/ct24rt08-facia-plate-for-renault I installed the same as you.
I didn't when I installed but I'll be getting round to it at some point. For the hands free mic I was planning on drilling a small hole on the facia just at the top right hand corner and attaching it so it's flush with the facia. It's really easy to install, if you want the USB lead that's attached to the back of the unit you'll have to remove the glove box and make a hole to put it through, removing the glovebox is very easy.