Since purchasing the car in Feb., I have replaced the front rotors and pads and the rear shocks. This weekend I am tackling the full cooling system refresh. I have done this on my E36 M3, but have no experience with the E46. Anything special I should look out for? Everything looks packed in there pretty tight, but I would imagine it is pretty straight forward. BTW, I am using the Stage 3 kit from ECS. Any comments or tips would be helpful. Thank you.