Ihave a 1994 ford mustan v6 3.8 and i want to replace it with a 351 windsor 4 barrel i need to know what do i need to have and i know its possiable to do this but i think i have to have a wiring harness from the 351 that i do not have where can i find it at and is there a way to go around using that wiring harness without have a hole bunch of switches in my car