Electric Water Pump Installation

[GTVeloce]

I've just bought an electric water pump from Davies Craig (EWP115) and wondering if others have installed them? I have a few questions if so:
1. have you supported the pump or just let it hang from the bottom radiator hose?
2. how did you remove the guts of the mechanical water pump?
3. I presume removing the thermostat is fairly straight forward? V6 motor
4. has anyone bypassed the mechanical water pump (once the modifications have been made) and just have a belt between the pulley and the alternator?

I'm excited to try it and see how well it works!