[Towmaster]

The Evans stuff seems more suited to racing applications, particularly in Australia where I found it hard to come by. They also have a specific water pump to suit an LS motor, but I couldn't get one in OZ was gunna have to get one from the States.
From what I gathered it seems like it was just a different type of 'coolant'.
In my opinion, unless you are doing endurance type racing in your Cobra then I don't think the extra expense would be worth it.
I have raced my Cobra quite a bit over the past 7 years and never had a problem with it ever getting hot.
Yes I subscribe to the Keep it simple philosophy....
Just my 2c worth.