Phoenix raises some great points (by the way old chap what did you think to my bit on the subject?)- though the MIL aero connectors are not as expensive as you think - a decent spec loom can be put together for £1k - £2k maybe less using them. May sound a lot but it will make you car lighter and it will make your car more reliable and it will make the electrics easier to service.
contact BERU F1 Systems
http://www.f1systems.com/
or Servo Ltd.
http://www.servoconnectors.co.uk/
these two firms are the market leaders