Re: i need link for v6 thermostat
What a coincidence. I have just changed my thermostat today and can confirm what Alan says - great pictures by the way.
I would also recommend buying a new gasket (only a pound or so). I smeared both sides of the gasket with silicone grease just to ensure a good seal.
This took about a quarter of an hour.
I also thought I would change the coolant as this has not been done for at least 3 years. The only way I could drain the water was by taking off the bottom hose - to get at this I had to take out the MAF and airbox. So the total job took about 3 hours.
On my old 1974 Alfa I can drain the radiator by removing one plug in the radiator, job done in 10 minutes. I guess this is progress!