compare a double pass setup with a Koyo 3.0Ltr, Howe or OEM Radiator on a Z32 TT? I like the idea of an electric water pump. You can easily monitor it's performance and even build a system to let it run for a determined amount of time after you shut off the car (using a turbo timer). You could also make a system to automatically shut the car off after a determined amount of time if it fails. TIA.