Im going to be doing a LS1 swap in my 89 iroc soon. donor car is 02 SS camaro with 6 speed its wrecked in the side but motor is good and trans and all that. i would like to use the harness out of the donor car to save money. how hard is it to use it? i would like to also use the dash harness to. im not going to have HVAC so i only need wiring to the gauges. i will appriciate any help thanks