I was asked to help my sons best friend put the 03/04 cobra motor and t56 in his 2001 GT. Ok dropping the motor is simple enough but when it gets down to the wiring I start to have fits. He has the engine harness and cpu from the termie but not the dash harness. Is this harness necessary as well??? I wanna help but hate wiring especially UNDER DASH WIRING as that just really pisses me off

Thx

A320pylt